My wife and I stayed at Aileen's place in Nakano for a week and it was great. The location is great, it's a short walk from Nakano station which is a useful station for several JR lines. Additionally near the station the is Nakano Broadway, and a open air shopping arcade, that have a huge variety of stores. The space itself is nice. The studio style apartment has a huge walk-in closet, and the bathroom is a good size for Japan, especially the shower area. Aileen also makes the stay easy by giving a very detailed guide in the room to explain everything from using the AC to how to sort the garbage. I would definitely recommend her place to anyone visiting Tokyo.