We thought that we were getting a boutique hotel, and got something different.
Once upon a time, this must have been one of the classier "love hotels" in the Gangnam area, as evidenced by the subtle but not glaring eroticism of the decor and the option of checking in through a vending machine. Today, the hotel's repositioned itself as a boutique and we saw no evidence of amorous lovers stopping by for the night. The property retains the high quality infrastructure that it must have opened with, but over the years, things have gotten a bit run down, the paint is a bit worn, and most noticeably, there's just bare-bones shelving instead of a real closet or wardrobe. If someone were willing to invest into a full renovation -- keeping the original stuff and replacing the lower-quality furnishings that have been added over the years, this could be a premier boutique hotel in the middle of Gangnam, about 5 minutes from Samsung HQ and the restaurants, bars, and other attractions of the area (like we thought it would be). As it is -- the hotel is what it is -- reasonably priced rooms in the heart of Gangnam, with a combination of high quality and budget furnishings.
I wouldn't recommend it for families, but it's reasonable for anyone else given the location, and you still get some premier furnishings even if other aspects are pretty low-budget.