Alex B.
The facilities are seriously impressive: several saunas, an onsen, a huge indoor hot tub, an outdoor hot tub, and an ice-cold plunge. There are two large lounges with bean bags and comfy chairs, where people relax on their phones, read, game, drink beer, or slurp noodles. It has a laid-back, almost slumber-party feeling, in a very Japanese way. The staff were lovely and helpful, though they speak very little English. Hardly any foreigners were staying there, so it felt like a genuine local experience. Grand Sauna Shinsaibashi was my first capsule hotel, and it set the bar high. The capsules were clean and surprisingly comfortable. I'm a big guy and slept better than I expected. The location is spot-on, just a short walk from Dotonbori. The lockers are quite small, so leave your suitcase with the staff, it's very secure, and bring only what you need upstairs for the night. Amazing value for the location and experience. I'd definitely stay again.

