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AMANE Resort Seikai

AMANE Resort Seikai（潮騒の宿 晴海）AMANE Resort Seikai（しおさいのやど はるみ）

Lodging
Beppu OnsenKamekawa Onsen
Kyushu & Okinawa·Oita
0977-66-3680seikai.co.jp

Day Use

Yes
12:30–22:00

(Day-use bathing) 12:30–22:00 (last admission 21:30) (Overnight bathing) 15:00–24:00, 5:00–10:00 next day

¥2,500

(Bathing only) Adults 2,500 yen, Children under 12 1,000 yen (After meal use) Adults 1,000 yen, Children under 12 free

Bathing & Water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Dry heat sauna room

Cold BathYes

Cold water plunge bath, typically used after sauna

OnsenYes

Uses natural hot spring water

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooYes

Allows entry with visible tattoos

KidsYes

Welcomes children and families

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels available to rent or borrow

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

潮騒の宿 晴海 海の棟

Shiosai-no-Yado Seikai (Umi-no-Tou Wing)

Operated by · (有)松男 代表取締役 久保 力夫

Sampled at wellhead
湯
Simple
Classification

Sodium Chloride-Bicarbonate spring

A sodium-leaning simple thermal spring drawn at 56 °C from a 150 m well on Beppu's seafront. Weakly alkaline at pH 8.2, it has the soft, slightly slippery feel of Japan's beauty-water family. Total dissolved solids sit at 968 mg/kg — just shy of the threshold that would push it into a named class — and the metasilicic acid is unusually generous at 192.6 mg/kg, leaving the kind of silica film that makes skin feel noticeably smoother afterwards.

pH
8.20
Weakly alkaline
Source temperature
56.0°C
Hot
Tonicity
0.97g/kg
Hypotonic
Free CO₂
11mg/kg
Low
Color
faintly yellow and clear
Taste
tasteless
Odor
faint earthy note
Highlights
  • High silica

Analyzed Apr 4, 2011·株式会社住化分析センター 大分事業所·Cert no. 8223904-00

Views

Sea
Mountains

Highlights

Jet Bath

Programs

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SM
Sergey M
2 years ago

95. Seikai, Beppu Hotel with onsen. Visited for higaeri, price 2500. Unlimited face towels and large towels in the changing room by the bath entrance. For higaeri you get access to baths on the 1st floor, but the signs mention some bath on the 8th floor (probably for hotel guests or private use). Everything is very high quality. Stamp available. 1. Indoor area. 1.1. Large main bath. Clear water, temperature is hot-. Comfortable to breathe. 1.2. Cold water bath. 1.3. Spacious, excellent sauna with a view of the outdoor bath area and the bay. 2. Outdoor area. 2.1. Outdoor bath with a seamless view of the bay. The viewing angle is wide — some pier infrastructure is visible on the sides, but the view is amazing. It's actually a plus that the floor is low — the water level feels higher and the immersion is deeper. Really cool. Clear water, temperature between warm and hot, so you can zone out with the view for a long time. 2.2. Jacuzzi with warm water and a bay view. 2.3. Loungers and chairs for zoning out with the bay view. Excellent place. Recommended for higaeri visits and/or staying overnight.