This was a great apartment, and pretty spacious by Tokyo standards.

First floor has one big room with two queen-size mattresses, plus a toilet and a bathroom with tub. Second floor has a living hall with kitchen, which is a good communal area. Third floor has two tatami bedrooms with total of 4 futons; also a toilet.

The kitchen is well-equipped with pots and pans, cups and plates etc, so it's easy to prepare your own meals if you wanted to.

As the host is fairly new to airbnb, he was extremely helpful with all our queries and requests! We ended our trip with too much shopping and he helped to book a 13-seater van to send us to Narita Airport on the last day.

Location is convenient: it's an easy 300m walk to Shin-okubo Stn which is just one stop away from Shinjuku. Meaning it's easy enough to come back after shopping; within 15mins you can be relaxing in the apartment!

Another plus: There are several convenience stores (Mini stop, 7-Eleven and Family Mart) within a 2min walk. This is a little Korean town, hence you'll find lots of Korean restaurants and shops in the neighbourhood.

SUMMARY:
If you want to be close to busy spots like Shibuya, Harajuku and Shinjuku yet not fork out premium hotel rates, this is really ideal.

Though the apartment can fit 6 very comfortably, you can probably still squeeze in an extra guest. Though it might get less spacious once you start opening up all your luggage...