Hotels in Oiso Long Beach
Oiso Long Beach is a pine-backed stretch of Sagami Bay in Kanagawa, home to Japan's first seaside resort, opened in 1885. Stays range from onsen ryokan in the hills to budget business hotels near Odawara Castle and the Odawara Shinkansen stop.
Families who base themselves along Oiso Long Beach trade theme-park crowds for a slower stretch of Sagami Bay, where pine trees line a beach that has drawn Tokyo day-trippers since the Meiji era. Oiso town itself stays low-key, so most hotels cluster a short drive inland around Odawara, Hiratsuka and Isehara, where onsen ryokan sit beside business hotels near the Odawara Shinkansen stop. This coast is built around hot-spring bathing and calm bay swimming rather than slides or a wave pool, with one bayside resort running its own small water park and outdoor pool. Book onsen rooms early for Japanese school holidays, when Kanagawa coast inns fill fast.
Oiso Long Beach in numbers
Near the Waterparkサザンコースト湘南
Spa & WellnessMARSOL C.S.Beach hotel
Near the WaterparkSENU VILLA Minamicho – Odawara
BudgetRYOKAN PLUM
Near the Waterparkいぬと海辺
Breakfast IncludedTsurumaki Onsen Jinya
BudgetHave a Nice Day!Odawara
Near the Waterparkmiss morgan Hotel
Near the Waterparkホテルサンライフガーデン
Near the Waterparkホテルルートイン平塚駅北口
Spa & WellnessOiso Prince Hotel
Spa & WellnessTenseien Annex
Spa & WellnessHadano Yugawara Onsen Manyo-no-Yu
Near the WaterparkToyoko Inn Odawara Station East Exit
Near the WaterparkGrand Hotel Kanachu
Spa & WellnessＴＨＥ ＨＯＵＲＳ
Near the WaterparkAPAHOTEL ISEHARA-EKIMAE
What to expect
- Pine-lined Sagami Bay coastline
- Open-air onsen bathing near the beach
- Odawara Castle a short ride inland
- Shinkansen access via Odawara Station
- Calm bay swimming rather than a wave pool
- Budget business hotels around Hiratsuka and Isehara
Local tips
- ✓Book onsen ryokan rooms weeks ahead for Japanese school holidays, when Kanagawa coast inns sell out fast.
- ✓Base near Odawara Station if you want the Shinkansen within walking distance for a Tokyo day trip.
- ✓Pack water shoes — stretches of the Oiso coastline are pebbly rather than fine sand.
- ✓Confirm whether parking is free or paid before driving in, since several hotels charge for it.
- ✓Pair a beach afternoon with an early-evening open-air bath once the sea breeze turns cool.
- ✓Rent a car if you plan to explore beyond Oiso itself — local trains link the towns but run on a limited schedule.
Where to stay
FAQ
Is Oiso Long Beach a water park with slides?
No — it is a natural stretch of Sagami Bay coastline, not a themed park. The area's water-based appeal is swimming at the beach itself plus open-air onsen bathing at nearby hot-spring hotels, with one bayside resort running a small on-site water park and outdoor pool.
How far is Odawara Castle from hotels near Oiso Long Beach?
Most hotels near Oiso Long Beach sit inland around Odawara or Hiratsuka, and several sit within an easy walk of Odawara Castle. Distances vary by hotel, so confirm walking time on each listing before booking if the castle is a priority.
Are there hotels right on Oiso Long Beach itself?
Oiso Prince Hotel is the closest option, a few minutes' walk from the beach with its own outdoor pool, onsen and a small water park. Most other stays sit further inland toward Odawara, Hiratsuka or Isehara, reached by a short taxi or local train ride.
Is Oiso a good base for families with young kids?
It suits families wanting a slower coastal stop rather than a full theme-park day: calm bay swimming in summer, open-air baths at the ryokan, and kid-friendly hotels around Odawara with breakfast included. Teens chasing thrill slides will find more excitement at a dedicated water park elsewhere on the coast.