Pretty typical of a capsule hotel, in a very convenient location (5-7min to metro). A fair number of signs in English, so pretty easy for none Japanese speakers.
Good size bath, not too busy on a Tuesday night at least.
Capsule size can accommodate up to 190cm I would think. Think of it as a one-man tent and you'll be fine.
Recently the smoking in these places has been restricted to smoking rooms, so not nearly as bad as 10 years ago.
Lockers a bit small if you have a big bag.