Living at Shu’s unfortunately turned out to be a quite tedious experience due to impoliteness and lack of listed amenities (no wifi), and we can therefore not recommend the place.
However, a lot of things make it a great place to stay too, so let’s begin on a happy note: Great location (close to both train/metro stations and you can walk to Shinjuku + close to groceries and food), very clean, big compared to most places in Japan, good bed, good fridge (however don’t expect to be able to cook), and great tv. Despite this, we did still have a rather unpleasant stay. First of all, when we arrived, there was no key in the mailbox as promised (we arrived 3-4 hours after check-in time). We tried to call Shu, but with no luck. In the Japanese summer heat with 3 large luggage bags we therefore had to find a 7-eleven with wifi to contact Shu through Airbnb. We did that and asked him to call us, as we would not be able to see his messages without wifi. After waiting some time walking around to find a café for more long-term wifi access, we accidently and luckily met Shu on the street. He did not in fact try to call us, but just told us that he thought we came tomorrow. No apologies or anything. In the apartment we could not get the wifi to work. It turns out that – unlike every other place we have stayed in Japan – you need a special app to access the wifi and this app is only accessible through the Japanese app-store. We showed Shu, that even though we could change app stores, we were not permitted to download from the Japanese app store and was therefore completely unable to access the wifi. Shu’s solution was to “offer” us to buy access to his pocket wifi. Long story short, we had to pay Shu in excess of what we have already paid in order to use the wifi. Shu did not in any way try to be forthcoming and just told us, that it was not his responsibility to provide the wifi. He also tried to keep payment for wifi in cash and out of the Airbnb system, even though this is not allowed (as it cannot be tracked or documented). All in all this was definitely the most cumbersome Airbnb experience we have had in Japan and we cannot recommend the place.