A cheap option if you want to be close to Shinjuku and Shibuya. But when you arrive, they will video-call you and ask to see your passport. They adamantly insisted on taking a screenshot of the entire photo page, which I found odd. Most AirBNB accommodation just lets you go inside when you arrive.
Also there was no chair in the apartment, which became a very big problem, because it means as long as you're in the apartment, the only option is to stand up while downstairs, or go upstairs to the loft and lie in the bed. I found myself lying in bed way too much due to this, which was not the holiday I had in mind.