マリンホテルアプリ is the official app for Diamond Setouchi Marine Hotel, providing users with exclusive deals, discount coupons, and essential information about the hotel. Enjoy special offers, family-friendly facilities, and unique room options. Access the latest updates and promotions directly through the app, ensuring a memorable stay. Perfect for families, the hotel features nearby attractions, such as a toy kingdom and animal parks, making it an ideal destination for young children.