Sanso Kannawaen

A 50-room hillside inn above Kannawa's steaming 'hells' where every room has its own free-flowing bath from two private wells, and the water can turn sea-blue — but it's a large, rebuilt complex, the blue isn't guaranteed, and 2026 dinners are uneven

Sanso Kannawaen spreads over a 13,000-tsubo hillside estate in Kannawa, Beppu's steamiest hot-spring quarter, next to the Umi and Yama 'hells'. Once an old-fashioned inn known for its large Japanese garden, it closed for about four years and reopened in August 2016 almost entirely rebuilt, with a noh stage of Nara timber, a thatched teahouse and two ponds. The hilltop Sora wing followed in 2019, and the shared baths were renovated in 2024. Today it's a 50-room complex of main building, annex, detached villas and the Sora block. The draw is the water. Two private wells supply a sodium-calcium chloride-sulphate spring, cooled without adding water and free-flowing into every room's bath and into the shared baths, which have Kannawa box steam baths and views over Beppu Bay. On good days it turns the cobalt blue of nearby Umi Jigoku, but not always: a June 2023 blogger's indoor room bath never turned blue, and a September 2026 guest found the big bath milky white. Japanese guests rate it 4.6 across 759 reviews on one major site (rooms and baths 4.7) and 4.51 across 767 on another. A third site is cooler at 4.33 across 108, with service at 4.19. Guests praise the views, the spacious rooms, a three-drawer Japanese breakfast box, help for elderly guests and birthday surprises. The 2026 complaints are mostly about dinner: small teppanyaki portions, courses rushed through in under an hour, pressure to make way for the second sitting and an overcooked steak. Others mention plain, veneer-like finishes, a steep access road, worn bath fittings and a busy, crowded feel that's far from a quiet old ryokan. On one booking site, two-meal rates start at about ¥29,700 per person for a windowless room and ¥41,250 for a standard Sora twin (about ¥82,500 for two).