Came here with high expectations based on other reviews, but left disappointed, mainly due to 3 key things
1) The 'deluxe' room with city views had one of the smallest windows I've seen in a high rise hotel - the view was technically of the city, true, but the small window and inadequate interior lighting left the room feeling much darker and depressing than any of the pictures suggested.
2) The included breakfast was thoroughly mediocre, and probably the worst breakfast buffet I've had at any hotel in Asia.
3) During check-in, the staff accidentally under-charged me, which I didn't notice at the time, and would have been happy to correct when they discovered the error.
However, they decided it was appropriate to call my room at 6am to wake me up and insist that I had to come and pay the balance IMMEDIATELY. Not at checkout, not even a little later when I went down for breakfast, no. It HAD to be done right away and they wouldn't stop harassing me until I blearily went downstairs, so that they could get the correct payment (apparently before an audit at 7am.) Never mind that I suffer from insomnia and couldn't get back to sleep which left me out of sorts the whole day and ruined half of our two night stay in Busan.
I find it utterly ridiculous that this hotel and its staff would choose to take an error THEY made and make it into the guest's problem; It just violates every principle of the hospitality business, and we won't ever use this hotel or chain again.