If you don't have any issues with setting up shop 18 kilometres outside of the city center, look into the suburb of Kojima. It's got 2 places available, including Washu Highland Hotel and Setouchi Kojima Hotel Kurashiki.
For some alternatives, try out the Okayama Royal Hotel and the Kurashiki Royal Art Hotel. They are 25 kilometres and 25 kilometres respectively from the center. Wotif also suggests the Hotel Granvia Okayama and the Diamond Setouchi Marine Hotel. The first is 25 kilometres away from town, while the other is 8 kilometres away.
It's well known that we Aussies are pretty chilled, so consider staying a little longer and check out the Manekineko Museum of Art and the Sanyo Gakuen University, which you'll find in Okayama, 20 kilometres to the north of Naoshima-cho. If you'd like to spend a few nights in Okayama, check out the room rates at the Daiwa Roynet Hotel Okayama-Ekimae and Okayama Koraku Hotel. Or, you could consider staying in Sensui Island, 55 kilometres to the west of Naoshima-cho, where you can choose from the Hotel Ofutei and Migiwatei Ochi Kochi. Sakamoto Ryoma Shukuhakuato and the Fukuzenji Temple are just some of the more popular sites to explore while in Sensui Island.
Onomichi is located 75 kilometres away from Naoshima-cho. While you are in the region, you may wish to visit the Senko-ji Temple, Senkoji Park and Jyodo Shrine. The Onomichi Motion Picture Museum and the Saikokuji Temple are also worth checking out. Onomichi has places to stay to suit all budgets and tastes, including the Onomichi Royal Hotel and Onomichi Daiichi Hotel.
Takamatsu Airport is the most logical airport for getting to Naoshima-cho. It is 25 kilometres from downtown Naoshima-cho. The APA Hotel Takamatsu Airport is nearby.
Hotels in Naoshima start at AU$76 per night. Prices and availability subject to change. Additional terms may apply.