I couldn't have wished for anything more than our experience at Shu's flat and would definitely recommend it for anyone wanting to stay in Tokyo.

The place is a good 10min walk through Shinjuku (but worth it) or just over 5min walk from the Yamanote Line.

The flat is exactly as pictured. Worth knowing: the flat is actually on the ground floor of the house. Shu lives upstairs and is extremely kind and helpful. We would often wake up to some snacks and small bottles of water.

Only (very small) little downside would be the WiFi not working very well - we had our own data simcard so it was manageable.