For our first night in Tokyo, we booked a capsule hotel in Ningyocho to experience this unique type of accomodarion.
In the nine hours Ningyocho (no sponsorship), the check in is completed at a kiosk, they provide personal lockers for bags and a personal goody bag (towels, pyjamas, tooth brush, and slippers).
The floors with the sleeping rooms and showers are separate for women and men and only accessible with the QR code card.
The capsule itself is quite big and offers enough space (with a lot of extra space).