I did an extended stay at Yang's place in Nishinippori. It's a really affordable, convenient and pleasant place! Because of its incredibly convenient location, being a very short walk from JR Yamanote, Chiyoda line subway, and Nippori-Toneri Liner, you will hear some train noises, but I got used to it after a while and used the train almost every day so it was worth it for me. The room is small but had everything needed for a pleasant stay - I highly recommend it and appreciated the extra amenities such as the stove top, tv, washer and bathtub! Yang and the co-host were friendly and quick to respond and addressed any questions. The neighborhood is busy from the main road but cool to walk around and explore outwards and a reasonable walk to Yanaka, Ueno, and Arakawa River.