I stayed here for a month. It wasn't cleaned very well when I initially arrived but I'm assuming it was because it's been vacant a while due to covid, not a big deal. The biggest issue was the black mold that had greatly accumulated in the AC/Heating unit, that should have definitely been cleaned. They scheduled maintenance five times while I was there, not a big issue and It's to be expected during long stays. The area is quite loud at night and early morning, lots of foot traffic from drunks, even a few who stayed in the same building. With old paper thin walls you will hear every noise. All in all you get what you for, this place is in an awesome location in Shinjuku, and for the price it's hard to beat. I'd certainly stay here again for a period of maybe a week or less, but if you enjoy peace and quiet or have a long stay I'd try to find a quieter place. If you're on a budget this place is definitely one of the best ones you can find given the proximity to just about everything in the city. With a little cleaning this place is an absolute gem.