I spent my first night, after a 14 hour flight at this women's only capsule hotel. It was a very different experience than the other capsule I stayed at, although some parts were still similar.
I arrived right at 4 pm for my stay, the earliest check-in time and was given amenities and bed clothes at that time, and then shown to my room. the capsule room itself was fairly small with only a few units- a bit more private than other capsules can be. the "door" is a privacy screen - a little more private than a curtain, but does not lock closed. However, I did not feel unsafe or as if I was at risk.
Lockers are provided to store your luggage and I managed to fit my carryon roller bag into the locker. Some people opted to keep their luggage out of the locker just inside the capsule room.
the onsen was amazing. I went very early in the morning after sleeping and had the place to myself - very relaxing and the shower and dressing areas were pristine and serene.