it was really nice! The date we arrived was very rainy and windy, but staff members welcomed us from the parking(underground) and led to reception quickly. The room B102 is located across the cafe, and room service was possible (food last order by 19h), and breakfast was ready to pick up from 09h at the next day. The room was very clean, and it offers many towels at each bath room(almost 10 towels at each bath room). Only downside was the bed cover, it was not neat (not sure if it is used one or new one).
The private pool was big enough to play as a family. The view was amazing and we could enjoy sun rise from the living room. It is 1 hour driving from Pohang train station so it is quite far, but it worths to visit there!