We, a couple from Switzerland, stayed in a room of Koji and Nami for 4 nights!
Everything was very well organized (easy to find, getting the keys...) and the room was very cosy, clean and in a cool Japanese style!
They recommended us some places to go in this huge city and provided us with a very useful pocket wifi! This is amazing and helps a lot to find your way and the good spots in Tokyo!
Would definitely recommend to stay there!