This new Shibuya capsule hotel has cabin-style rooms: single-decker, divided on the sides by walls, but with curtains for doors; they're literally the size of a single bed (put your luggage underneath). It's located in the heart of Shibuya, and among the neighbourhood's cheapest options. Complimentary breakfast (continental style), happy-hour beer and all-day coffee sweeten the deal.
Unlike other capsule and cabin-style hotels, the Millennials doesn't require you to pack up daily for cleaning purposes. Actually if you want your bed redone with fresh sheets, you have to request it (¥1000).