Kei's place was an awesome home base for a few days in Tokyo. It's in a great location and was easy to access from the subway (5-10 minute walk). The place was very clean. There are 2 rooms upstairs that sleep 4 people and two people slept on futons in the sitting room downstairs. The common space was a bit smaller than expected--tight fit for 6 people to hang out in. However, if you plan to spend most of your time out and about exploring like we did, it's not a big deal. Just don't plan on lounging around the house with a bigger group.