I stayed at Mari's place for 4 days and enjoyed every moment of it. The location is tough to call; it's close enough but there's probably other places that are more centrally located, so if it's your first time in Tokyo it might be a bit tough (for example, it's a 20 mins train ride from Shinjuku and then a 20 mins walk to her house or 10 by bus). But for me I wanted to stay at a nice quiet place, somewhere that felt like home and Mari's place fit the bill. Just like in her photos, the place is unique, charming and easy to find. Mari was super kind to make me breakfast each day which was delicious (did western style and Japanese style which the latter I found better). She also dropped me off at the train station which I appreciated very much. Bedroom has a sofa bed that's more than comfortable and bathroom does the job. Would stay again when back in Tokyo because of the peace and quiet and the friendliness and hospitality of Mari.