Excellent location. Close to the main Yamanote loop which is a few stops from Shinjuku, Shibuya, Ebisu, and Harajuku. 20-40 minutes to even more distant points of interest (Kichijoji, Tsukiji market, etc.)
The unit itself was comfortable with some basic amenities. Microwave, mini fridge, tv, and water kettle. The 2 showers and 2 toilets were great for our 6 person stay.
If you plan on going in the winter/cold season, confirm with the host that the heaters in the double room (twin beds) and living room are functioning. We had heating complications during the stay.
Would stay here again, but not with a group larger than 6 (due to aforementioned heating complications).