Kaiyoukaku features outdoor and indoor hot-spring baths, a roof terrace and Japanese rooms with sea views. It also offers concierge services, free WiFi at the lobby and rental bicycles, while entertainment facilities also include a sauna, a bar and karaoke. Massages treatments are available. Kaiyoukaku has a 24-hour reception, and it offers a free shuttle service to/from Mikawa Mitani Train Station. Guests can repose at a public hot-spring bath separate by gender, or browse the souvenir shop. Drinks vending machines and free parking are on site. Spacious rooms feature a tatami (woven-straw) floor and a low table with seating cushions. They are fitted with a TV, a fridge and a private bathroom. Yukata robes and toiletries are provided. Guests sleep in traditional futon bedding. The Kaiyoukaku is only a 3-minute drive from amusement park Laguna Gamagori. Mikawa Mitani Station is a 5-minute drive away. A Japanese breakfast and dinner are served at the dining room. Room service is also available. This family room has air conditioning, electric kettle and seating area. Guests sleep in traditional futon bedding.