I stayed there last night. Although it looks close to the airport, it takes a good 30 minutes to get to T2 by shuttle, longer by monorail/bus. T1 is closer, though.

There are a bunch of seafood restaurants nearby, but they may be seasonal. The hotel seems to be a romantic destination for couples. as well as popular with groups of women. Most guests appeared to be driving.

The reception staff were friendly, but some pretty challenged in terms of English. Very little English signage. International guests are not their focus for sure.

Pros: Pretty much spotless, upgraded to a large room on 10th floor. Large bath for two.
Sauna has a Japanese-style onsen with indoor and outdoor tubs. Rate was 120,000krw ($100). Hotel shuttle to T2, but sometimes only every 2hrs.

Cons: Did not have a good bay view like the other side of the building. No breakfast. Charge for pool. Powdered coffee and no creamer. Asked about buying some milk, and was told to take a taxi/shuttle to the airport. Ridiculous, as I found a convenience store 5 minutes away. No mention of status or points gift. When I asked one guy said 10,000, then was told by another staff it was 1,000 (as I expected). As the previous poster said, the gym is small and has minimal weights, 3 cardio machines and a boxing gym (???).