Yes, the ferry ride is 15-20 minutes from Aho port. I noticed that across the street from the ferry landing was a sign about a guy who would rent you a car for Y1000 an hour. Many of the trips are auto ferries, if you already have a car.

Alternatively, if you're in shape, bring or rent a bike when you arrive. The shuttle bus system is only available to hotel guests, but there are some public busses that may not run often. Taxis seem very hard to come by.

A big advantage of Museum or Oval rooms is 24 hour access to the art at Museum.