The three of us had such a lovely time at Mary’s kawaii apartment in the trendy/hipster neighbourhood of Shimokitazawa. Best location, so close to the train station and local shops, bars and cafes (great for wandering!), and very easy to get around and into the central suburbs (Shibuya/Shinjuku etc) using the train.
The apartment itself was very well equipped/decorated, and had absolutely everything we needed, including pocket wifi for traveling around the city.
Mary gave great local recommendations and was great to communicate with - would not hesitate in recommending anyone staying here when they come to Tokyo!!