Legit, modern/recent build, purpose built residence. But in my opinion it is not near a "no transfer to Shibuya/Shinjuku". In fact it is a good 850m walk to a "no transfer" station, and the ride to Shinjuku is 21 mins, Shibuya 28 mins, when you are in the train (quite a long time to be squished and thrown around if you have little ones or carrying a bit of stuff). Not much to find within 1 km radius of residence. Nearest train station is 350m but you need to transfer onto a JR train to get to town. Wifi is very slow but we had out own unlimited data sim card. Having said that it is very comfortable and very new. And we got to see a different side of Japan when we return to sleep at night.