Great place to stay while in SF! The location is quite good and it's very near Union Square. There is also a CVS nearby in case you need some basic necessities. Check in was smooth. The room was nice. The bed is a bit softer than what I'm used to, but I still slept well. There's a decent desk space where one can work. Other amenities include a cabinet with about 3 hangers, some shelves and a refrigerator. The bathroom has a shower and toilet, but the sink is outside the bathroom. Wasn't really a problem, but would've been nice if there was some lighting near the sink. Also, the lighting in the room was quite dim, but there's a USB desk lamp that had a decent light. The bedside lamp was not working when I was there. I asked receptionist if they could get it fixed and they said they'd call someone. But no one came to fix it. Not a big deal though as I was outside most of the time.
There's a coin operated washer/dryer at the ground floor. $2.50 for a wash and $2.00 to dry respectively. If you don't have quarters, there's a machine that can break down bills for you. They didn't have detergent available when I went there so I bought some detergent pods at the nearby CVS, which was just a short walk away.
Initially, I thought that the elevator was not working, so I took the stairs. There's actually an extra floor so you climb up 5 flights of stairs going to room 420. I later discovered that the elevator was actually working thought it seems quite old. It was an interesting experience using it, though it doesn't feel that safe.
When you are checking out and reception is closed, you can drop the keys in a slot near reception, which I thought was quite convenient.
Overall, I had a good experience staying at the place. One thing that would've improved my stay was to have better lighting in the room.