This hotel really surprised us and it would have to be one of my top 5 hotels that I have ever stayed at. The size of the room was just HUGE with a large balcony and an amazing bathroom. The sparkling water/sea views from both the bathtub/bathroom and the main living area were just amazing. There was a lounge suite in the spacious room and 2 King size beds (with trundle beds underneath). The fridge was stocked with complimentary drinks replaced daily and the dinner buffet is one of the best I've had. Unfortunately as our stay was so short we didn't get to use many of the facilities :(

We only stayed one night - we should have stayed for 2 or 3 nights as it was such a great hotel and location.

Location on the fringe of Karatsu is ideal, with easy parking. Our room in East Wing faced the beach and had a superb view on the bay. The outdoor swimming pool is beautiful, large enough for a little swim, with views right on the seaside and the celebrated local pine grove. You can easily go from beach to swimming pool. We were well received and kindly upgraded to a huge, luxurious room; every comfort you can think of was there. The circulation from bedroom to onsen to swimming pool can be complex, but we were given an English language map that greatly helped. This was our second stay in Karatsu, and we'd love to come back and stay in Karatsu Seaside Hotel another time !

Music in the swimming pool area could be dispensed with : best to have the sound of the waves nearby.

This is just a superb, outstanding hotel in a superb natural environment. 1. A fantastic location: one side faces (50 m from) the sea, on opposite side, a nice pine forest. Quiet location, but close to the town and to a railway station. The beach is of sand, long and wide with a few people on it. 2. The rooms are very large and well equipped, with fully opened view of the sea. Every tiny detail was well thought; everything you may think of was provided, including indoor closes. And every corner is perfectly cleaned. 3. Polite, friendly and quickly responsive staff. 4. Interesting and reach, mainly Japanese, kitchen. Overall, I was surprised to get this exceptionally good service and conditions for the relatively small money I paid. This hotel unlikely is for those who likes entertainment, noisy bars and disco. Just for relaxing in Paradise!

Nothing

Hotel is very nice and staff are very friendly.

WiFi is very unstable, the rooms lights are too bright, it does have a dimmer switch maybe my switch is broken, I dim it and when I come back it is crazy bright again. Overall the hotel room is clean but some stains on the room sofa which you cannot miss. Ground floor Outdoor pool is closed for some reason, had to go to the roof pool which is heated, not my personal preference when it is 30degrees.

The onsen pool on the rooftop was awesome. The spa facilities were huge. You need at least 2 days to enjoy all of them. The basic room without onsen was spacious with an ocean view. Breakfast and dinner at the buffet and restaurants were in good variety and quality with local ingredients. Will love to visit again

There was a slight smell, from new paint perhaps, in the room and the hallway on the east side. New renovation smell I assume. Maybe opening the windows often can get rid of it overtime.

This hotel is completely AMAZING!!! So beautiful, the staff is so professional, the spa is incredible, the rooftop sauna/pool is crazy beautiful and the breakfast buffet was excellent. The staff was so very nice although their English was very limited, not a problem at all with Google Translate!!! The room and the entire hotel was immaculate, the spa was the best I have ever been in, the onsen was totally amazing. Cannot say enough good things about this hotel, would stay there again tomorrow!!! Will definitely stay there when I return to Karatsu.

Nothing!!!

The facilities were excellent and the hotel was new and clean. The view from the Thermal Spa was amazing. The dinner (buffet) was tasty and high quality. We enjoyed especilly the fresh squid famaous for that area and desserts were all delicious!

The cost of the stay was very expensive. We paid to join the hotel membership so that we could get some discounts on souvenirs and food in order to earn some points. We earned enough points for free bath tickets for 3 people. We tried to use these points to take a bath but the hotel refused us because it was Saturday and busy. We couldn't understand what is the point of paying to join the hotel membership if we are not treated as members and don't get to use the points. The stuff who dealt was so businesslike and not customer oriented. We were very very disappointed with this treatment because the services otherwise were excellent.

Everything was perfect. We stayed at West wing, in a wonderful double room and nice view on the beach. Every staff was so nice including those in the front desk and the concierge. I really appreciate the staff at the breakfast buffet who helped me (it was yesterday!) to find my lost phone in the restaurant: they did not speak English, but their attitude and help were so nice. The cook at Tepanakki was also very kind, and he served us wonderfully. I also appreciate Booking.com that transferred my message to the hotel. Frankly, one of the best hotels that I have ever visited in Japan. Thank you!!

Nothing. Everything was prefect during the stay.

The hotel is amazing. The rooms are vast and beautiful, and the sea view is just breathtaking! Moreover, all rooms have sea view. The staff is very polite and helpful. The hotel also have great spa area, as well as indoor, outdoor, and roof pools. Everything is extremely clean. The hotel itself is brand new. There were also snacks and drinks for free in the room. We felt very relaxed and pampered. Last but not least, we had great massage in the room by an elderly man, we really appreciate it!

I had a great sea and mountain view and I had the pleasure of watching beautiful sunrise from my balcony. This hotel was more luxurious than I thought. The room was very spacious. The spa was also top notch.

Almost everything is in Japanese. Staff didn't speak English as well, but regardless, they were very helpful.