The large central pontoon has water, but is not strong enough to leave a yacht on. Fuel is by the small marina berths.
Berths are too small for most yachts and expensive. We were eventually directed to SW wall of marina, where there is no charge.
The marina is well north of town, but well connected by a train, one stop, or bus, which takes you to the centre of town and close to supermarket. From here buses are more frequent and bicycle hire recommended.
The old samurai houses in town are well worth a wander, of particular merit is the merchant house and garden of Kikuya-ke Jutaku.