Seiji is a friendly and welcoming host, and our room was very comfortable! He gave us all of the information we needed for our stay, and was kind enough to arrange a taxi for us the morning we left.
The house is a little out of the way from the main entertainment and shopping areas, but easy to get to, and not long by subway from Shibuya. We tended to travel during morning rush hour, so the trains were all stuffed to the brim, but everyone gets off at Shibuya anyway so it wasn't hard to get around. Transit was much more spacious in the evenings.
The apartment was a comfortable size, and we had no trouble at all with the space. The bathroom is small and has no sink, but this is typical for Asia and we were expecting this. Overall we felt the listing gave us exactly the right expectations and we had a great stay at Seiji's place and in Tokyo generally!