I stayed at the apartment for a week and it was a very enjoyable stay.
The apartment itself is cozy, has everything you might need and is warm. The location is excellent, close to the metro station and a supermarket is just the other side of the road.
I didn't meet Khao personally, but he was alsways available for any questions and he was very helpful and quick in settling a small issue during my stay. I had a late flight back home, so my departure from the place was also late, and Khao was also very understanding and accomodating about it.
I freely recommend the place and Khao as a host.