I had a really good stay at the apartment.
Everything is exactly as in the pictures, the apartment is very spacious (I stayed there by myself, though), and everything worked perfectly. Everything was also very clean, and the communication with Mark and Yoshito was great.
Due to the fact that the apartment is in a (very convenient) central location, you do hear some city sounds. I didn't hear regular traffic sounds (the apartment is on the back of the building), but I did hear sirens sometimes or planes. But to be fair, I think they're very difficult to prevent when you stay in the city.