The place is a 15min walk or a 3min bus ride from jiyugaoka station. The bus runs until late midnight so you can still catch the last train home and get on the bus back to your stay. Otherwise a taxi from the station isn’t too pricey either.
Jiyugaoka is only 3 stations away from shibuya and it takes about 20mins to shinjuku
The place is clean and as advertised. Ritsuko is very responsive and even went out of her way to find my train times on the day of my arrival.
There is a 7/11 very close from the stay and also a lovely small bar literally right outside the door called ‘bar y cuero’. (Look for a small sign that says blue moon 800yen, the place doesn’t really look like a bar from the outside)