I had a very good stay at Peter's overall. The location is wonderful. It is walking distance to the SOHO areas as well as great parks such as Russell Square. You could even walk to British Library/St. Pancras station. There are many great restaurants and pubs near by.
Regarding the room, since I was staying the third floor, it was a bit challenging to carry my over 20 kilo luggage up through the narrow staircase. The room was very spacious and in general clean--though some wear and tear due to the age of the building, which is very understanding. The bathroom is rather small, and the shower is attached inside, so whenever you take shower, even with the curtain, many parts of the bathroom gets wet. In addition, there was a good size kitchen and small size refrigerator. But if you want to cook anything, you need to bring or purchase everything including cooking oil.
Overall, it was a very nice stay, especially because Peter was always available on the phone or text message whenever I need a help, and Maggie who is a helper in the building was very attentive during my stay.