Stayed here the last week of October during a weekday stay (Monday-Thurs), was given an upgrade to a Grand Suite, which is a really great suite room. Sauna and jjimjilbang access does cost money, it is not included for globs, but I was told that it was a proper jjimjilbang (with the salt rooms and stuff). I did not make use of it.

Mrs. Falcon9xr and I did receive a gift cert or something of some kind to use on the 38th floor, but alas, we weren't able to visit during a valid time to make use of it. So I wasn't able to confirm the sliders, but drinks were definitely pictured on the cert.

GC offerings are adequate, there were four hot dishes offered in the evening, and breakfast was pretty standard. I was satisfied with their offerings.

There is a 7-11 convenience store on the 4th floor of the hotel, and prices are comparable to outside the hotel. The convenience store is (supposedly) open 24/7, which I thought was very convenient.

During small talk conversations on the elevator, one person said that the malatang restaurant was fantastic. I didn't get a chance to try it, but it did look good in the pictures, lol. I did have malatang at the Chun-li Malatang restaurant (yes, that's the actual name of the restaurant, their restaurant logo _does_ resemble the street fighter character) right around the corner, and it was excellent.
Another person said that the casino will comp flights and stays at the hotel. Obviously this would be based on play, but if anyone has any details on how much play is required, even in terms of ballpark, I'd be interested in information about it. I unfortunately didn't really have a chance to talk to the casino folks, and was only able to do a quick walkthrough of the casino floor.

The pool floor also has a small video game arcade, with pretty decent games, for those with kids. The pools are also nice, both the indoor and outdoor.

I'm not a huge fan of Jeju in general, but I'd visit again for this hotel.