I stayed 4 nights at 성겸's. At the time of booking there were no any reviews and the host's listing is not comprehensive either. So I'd like to write more informative review.
The bad news are that the guest is to sleep on a floor on a thin blanket without bedding. There is no privacy, because of small room and the host sleeping just two feet aside. You'll have only a few hangers on the rack so expect to keep everything unpacked. Bathroom is small with a shower next to the toilet and two people are stuck if get up simultaneously.
But despite of the written above I was very satisfied with my stay and keen about coming back again. Because,
성겸 is really nice and friendly guy, communicative and always responding by LINE chatting. The location is maybe the best of Seoul. It is in the heart of Garosu-gil, Gangnam area famous for upscale shops, cafes and Seoul Hi-So publics. Airport bus 6006 stops at 200 m, two metro stations are at 700 m and city bus stops are not far. I did morning exercises at Olympic park on Nan river bank walkable in 15 minutes.
성겸 keeps the flat clean and tidy and requests the guest to do so. It is not an option to cook at the place but one can find 24h grocery store with coffee, sandwiches and microwave meals on the corner.
And the last but not least - the price. One can hardly find accommodation in that area below 50000W. So it is a real bargain.