Izu Imaihama Onsen Imaisou

Imaiso reopened in August 2024 after a renovation, offering an all-inclusive stay. The property's three lounges serve drinks, including alcoholic beverages, sweets, and snacks for you to enjoy at your leisure from arrival to departure. From early-morning coffee to late-night draft beer, unwind and savor the relaxed pace of a holiday. Another highlight of Imaiso is dining without time limits. Come at a time that suits you and take your time enjoying your meal and conversation. Experience a truly unhurried resort stay.

Most guest rooms at Imaisou offer sweeping ocean views of Sagami Bay. The vast seascape stretching out before you is truly breathtaking. On clear mornings, watch the sun rise over the horizon. On calm nights with a bright moon, you may also see an enchanting path of moonlight reflected on the water.

At Imaiso, both dinner and breakfast are served buffet-style, so you can enjoy as much as you like of your favorite dishes. A wide selection of alcoholic beverages and soft drinks is also included with both dinner and breakfast. At the live cooking station, enjoy unlimited servings of popular dishes such as fresh abalone sashimi, butter-sautéed abalone, and Japanese Black wagyu steak. Take your time savoring seasonal dishes made with carefully selected ingredients from Izu and across Japan. Dessert plates, whole cakes, and bouquets can also be arranged for special occasions at an additional charge.

There are two large public baths, “Hekikai” and “Hekiku,” which alternate between men's and women's use. Each has an open-air bath where you can soak while listening to the waves and enjoying the sea breeze. Both also feature a sauna and a cold-water bath for a more leisurely bathing experience. There is one private hot spring bath on the premises, available for a fee for 45 minutes per session. Advance reservations are required, so we recommend booking early.

By car: From Numazu Interchange, take the Izu Jukan Expressway to Tsukigase Interchange, then continue for approximately 1 hour and 20 minutes. Alternatively, the drive from Tokyo Interchange via the Tomei Expressway, Odawara-Atsugi Road and Atami Beach Line takes approximately 3 hours. Free parking is available for approximately 40 cars. By train: Take the Limited Express Odoriko from Tokyo Station to Kawazu Station (approximately 2 hours and 30 minutes), followed by a 7-minute ride on the free shuttle bus (no reservation required from 2:10 p.m. to 3:45 p.m.; reservations required for departures between 4:00 p.m. and 4:59 p.m.). Alternatively, take the Tokaido Shinkansen to Atami Station, then the Ito Line and Izu Kyuko Line to Imaihama-Kaigan Station (approximately 1 hour and 30 minutes from Atami). The property is a 3-minute walk from the station.

The Kawazu cherry blossoms on Imaiso’s Shiosai Terrace are among the first to bloom in Kawazu. As an overnight guest, you can enjoy the blossoms at night without worrying about the time. Admire Imaiso’s cherry blossoms with your favorite drink in hand. The Kawazu River, the venue for the Kawazu Cherry Blossom Festival, is about a 7-minute drive away. The area is also accessible on foot from Kawazu Station, making it ideal for a stroll before check-in or after check-out.