I really enjoyed my stay at Serina's house. Her house is located just a few minutes from one of the stops on the Mita subway line. It's easy to get to the main Yamanote line. The pictures are accurate, and the room itself is a good size.
Serina was kind and helpful during my stay. On the first day it was raining, so she met me at the local station with an umbrella! She also helped me with getting around this part of Tokyo, and using the amenities in the house. She also provided hot drinks - very much appreciated on a cold day! I would definitely stay here again!