Southernmost House - Adult Exclusive puts you in the heart of Key West, within steps of Key West Butterfly and Nature Conservatory and South Beach. Highlights at this beach hotel include a restaurant, an outdoor swimming pool and free cooked-to-order breakfast. .The café, Seaside Cafe at Mansion, is open for lunch and dinner. The hotel's own lounge bar is a nice place to enjoy a drink. Additionally, you'll find free Wi-Fi in public areas and coffee/tea in a common area. Each morning free breakfast is served. There's also the convenience of self parking. .Places within a short walk of this 4-property class Old Town Key West hotel include Southernmost Point and Duval Street.
What's nearby
Duval Street - 1 min walk - 0.0 km
South Beach - 1 min walk - 0.1 km
Key West Butterfly and Nature Conservatory - 1 min walk - 0.1 km
Southernmost Point - 2 min walk - 0.2 km
Ernest Hemingway Home and Museum - 8 min walk - 0.7 km
Getting around
Key West, FL (EYW-Key West Intl.) - 9 min drive
Restaurants
Southernmost Beach Café - 1 min walk
Seaside Cafe at the Mansion - 1 min walk
Circle K - 5 min walk
Cuban Coffee Queen (Duval) - 4 min walk
Rum Bar at the Speakeasy Inn - 4 min walk
About this property
Southernmost House - Adult Exclusive
There's a restaurant on site. You can enjoy a drink at the bar/lounge. Free breakfast is available daily. WiFi is free in public spaces.
An outdoor pool, a terrace, and multilingual staff are also featured at Southernmost House - Adult Exclusive. Parking is available for a fee.
This 4-star Key West hotel is smoke free.
18 guestrooms or units
3 levels
2 buildings
Built in 1897
Cooked-to-order breakfast (free)
Poolside lounge chairs
Umbrellas for the pool
Coffee in lobby
Front desk (limited hours)
Staff members are multilingual
Terrace
Outdoor picnic space
No smoking on site
Bar or lounge
Dining venue
Southernmost House - Adult Exclusive offers 18 air-conditioned accommodations with coffee/tea makers and designer toiletries. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels.
Bathrooms include a shower, complimentary toiletries and hairdryers. This Key West hotel provides complimentary wireless Internet access, with a speed of 100+ Mbps (good for 1–2 people or up to 6 devices). Housekeeping is provided on a daily basis.
In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)
Available in some public areas: Free WiFi
Parking and transport
Parking on site (USD 40 per night)
Limited on-site self parking
Onsite parking includes off-street options
Food and drink
Free cooked-to-order breakfast available daily 8 AM to 10 AM
A bar/lounge
A restaurant
Coffee and tea in common areas
Restaurants on site
Seaside Cafe at Mansion
Things to do
Outdoor pool
Conveniences
Limited-hour front desk
Guest services
Housekeeping (daily)
Multilingual staff
Outdoors
On the waterfront
Outdoor furniture
Picnic area
Pool loungers
Pool umbrellas
Terrace
Accessibility
If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
Grab bar in shower
Grab bar near toilet
Hand-held showerhead
No lift
More
2 buildings
3 floors
Built in 1897
Smoke-free property
Victorian architecture
Room amenities
Bedroom
Pillowtop mattress
Premium bedding
Bathroom
Designer toiletries
Hair dryer
Shampoo
Shower
Soap
Toilet paper
Towels provided
Entertainment
42-inch flat-screen TV with premium cable channels
Streaming services
Food and drink
Coffee/tea maker
More
Air conditioning
Individual furnishings
Iron/ironing board
Policies
Check-in
Check-in start time: 4 PM; check-in end time: 10 PM
Late check-in subject to availability
Minimum check-in age - 21
Check-out
Check-out before 11 AM
Special check-in instructions
The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation
Information provided by the property may be translated using automated translation tools
Renovations and closures
The property will be renovating from 15 April 2026 to 31 December 2026 (completion date subject to change). The following areas are affected:
Exterior
Renovation work will only be conducted during working hours. Every effort will be made to minimise noise and disturbance.
Access methods
Front desk (limited hours)
Pets
No pets allowed
Children and extra beds
Children younger than 18 are not allowed at this adults-only property. All guests 18 and older are welcome.
Rollaway/extra beds are not available.
Cots (infant beds) are not available.
Payment types
Important information
Fees
Guests will be asked to pay the following charges at the property:
Resort fee: USD 33.75 per accommodation, per night
The resort fee includes:
Beach towels
Concierge service
Housekeeping
In-room bottled water
In-room coffee
Pool access
We've listed all charges provided to us by the property.
Optional extras
The fees and deposits listed below will be charged at the time of service, check-in, or check-out.
Self-parking fee: USD 40 per night
This may not be a comprehensive list. Fees and deposits are subject to change and might not include tax.
You need to know
Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old.
This property accepts credit cards; cash is not accepted
Cashless transactions are available
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher and a smoke detector
This property has outdoor spaces, such as balconies, patios and terraces, which may not be suitable for children; if you have any concerns, we recommend contacting the property prior to your arrival to confirm that they can accommodate you in a suitable room
Charges for extra guests may apply and vary according to property policy.
A cash deposit, credit card or debit card for incidental charges and government-issued photo identification may be required upon check-in.
Special requests are subject to availability at the time of check-in. Special requests can't be guaranteed and may incur additional charges.
This property is managed by a professional host. The provision of housing is linked to their trade, business or profession. This property has outdoor spaces, such as balconies, patios and terraces, which may not be suitable for children. If you have any concerns, we recommend contacting the property prior to your arrival to confirm that they can accommodate you in a suitable room. Minimum Spring Break check-in age is 24 years old. This property accepts Visa, Mastercard, American Express and Discover. Cash is not accepted. Noise-free guestrooms cannot be guaranteed. For guests' safety, the property includes a carbon monoxide detector, a fire extinguisher and a smoke detector in all accommodation. Cashless payment methods are available for all transactions.
We should mention
Pool access available from 8:00 AM to 10:00 PM
This is an adults-only property and children 18 years old and younger aren't allowed.
Registered guests are the only ones allowed to be in guestrooms.
Property is also known as
Southernmost House
Southernmost House Hotel
Southernmost House Hotel Key West
Southernmost House Key West
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West
Frequently asked questions
Is parking available at Southernmost House - Adult Exclusive?
Yep, Southernmost House - Adult Exclusive has a self car park for USD 40 per night. A self car park is also available, for a fee.
How much does it cost to stay at Southernmost House - Adult Exclusive?
As of 20 May 2026, prices found for a 1-night stay for 2 adults at Southernmost House - Adult Exclusive on 7 June 2026 start from AU$476, including taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.
Are there any beaches close to Southernmost House - Adult Exclusive?
Yep, Southernmost House - Adult Exclusive is a short 1-minute walk from Florida Keys Beaches.
Fun beach activities include snorkelling, scuba diving and waterskiing. You can also find boat tours.
Does Southernmost House - Adult Exclusive have a pool?
Southernmost House - Adult Exclusive has an outdoor pool. Grab your bathers and lounge poolside while enjoying under the shade of an umbrella. The pool is open 8:00 AM to 10:00 PM.
What makes Southernmost House - Adult Exclusive a romantic place to stay?
Ocean-view dining and a lounge bar, as well as pillowtop beds in the guestrooms, all help set the scene for a romantic weekend at Southernmost House - Adult Exclusive.
Is Southernmost House - Adult Exclusive family-friendly?
No, Southernmost House - Adult Exclusive is an adults-only property.
Does Southernmost House - Adult Exclusive serve breakfast?
You bet, free cooked-to-order brekkie is on offer daily between 8 AM and 10 AM.
Is there a free airport shuttle available at Southernmost House - Adult Exclusive?
No, Southernmost House - Adult Exclusive does not offer an airport shuttle service.
Is there a bar or restaurant at Southernmost House - Adult Exclusive?
Yep, they've got a lounge bar and an onsite restaurant that serves lunch and dinner.
What time are check-in & check-out at Southernmost House - Adult Exclusive?
Check-in begins at 4 PM. Check-out time is 11 AM.
Are pets allowed at Southernmost House - Adult Exclusive?
No, pets are not allowed.
Southernmost House - Adult Exclusive Reviews
Reviews
9.4
Exceptional
All reviews shown are from real guest experiences. Only travellers who have booked a stay with us can submit a review. We verify reviews according to our guidelines and publish all reviews, positive or negative.
Staff very courteous ! Building very historic!
Things Wrong-
1)- During a cold week- no heat in room 104
2)- During one day- ho hot water in bathroom
3)- Goodwill Kelwin chocolate had bugs when opened
4)- Advertised Heated Pool had no heat
This Historic Building Deserved improved conditions eliminating above
.
sam
Stayed 4 nights in Feb 2026
8/10 Good
Xun
Travelled with partner
10 Feb 2026
Liked: Cleanliness, amenities
Convenient location. Staff very friendly and accommodating. Nice view. Seaside cafe was great. Moondog pastries available for breakfast. Insulation probably not great and could hear roosters crowing at night even on the top floor.
What a gorgeous property, the mansion is gorgeous and the views were awesome. It was so nice to walk out of the property and enjoy all that Duvall street has to offer without ever needing our car.
This property is beautiful and interesting for its rich history. The cottage rooms are right on the water. Staff is amazing and the breakfast is delicious from local bakery.