Easy check-in and decent place for the price. It's basically unused rooms in a dorm, but each room is private with a good bathroom as advertised (though note you need to get your own soap/shampoo from the Walgreens around the corner). Beds aren't super comfortable, but it works for a couple nights. WIFI seems strong.

Amazingly close to Union Square, but despite the large homeless population in the area, they seem to have a good system to keep anyone from trying to break in. The doors to the rooms only have a simply door lock, which isn't super secure, but this place works if you need something central and economical.