Booked in their private room for 7 days, upon arrival everything was really easy, just walked in with my door codes in hand provided in advance by the owners (no keys yay!!!) and waited for my room to be ready. Late check-in time at 4pm but they are flexible when it comes to that if your room happens to be vacated and cleaned by the time you arrive, you might be able to check in earlier.
They upkeep the cleanliness very well with a cleaner coming in to do a general clean every other day.
The only very very slight setback is that the room kinda smells a little like a combination of tatami and soy sauce? Perhaps because of the yakiniku place next door? I met with a fellow hostel mate and they said they smelled the same thing on their floor (I'm on the 3rd and they on the 2nd) but it isn't really a problem, just if you have a sensitive nose and are picky with scents then keep that in mind.
But other than that, great stay, great sized room for a single traveler, most importantly, clean safe and private for a single female traveler! Great price too!