Truly Mediocre
Maybe this just isn't my type of hotel...
We arrived after making reservations for a Junior Suite. We were told that they actually had none available even though we had booked one 6 months prior to staying there. The problem had something to do with their online reservations system they said... It was strange since I booked DIRECTLY with them. The lady at the desk (whose name badge said manager) was not really concerned. She apologized (rather insincerely) and said she had a smaller room she could put us in. We felt as though we had little choice so we took the room.
The smaller room was at least $40 per night cheaper when we originally booked the junior suite but all she was willing to do was discount the room a whopping $15 per night since "I reserved the junior suite during a sale period". I was tired of arguing so I just took the room, but the right thing to do would have been to honor the SALE price for the smaller room. 
So we tried to get over the check in mess and just enjoy the fact we were in SF and the weather as great! We wanted to try and book a semi-private tour to see Muir Woods and so we tried the front desk again. Again, this was a mistake. They had no idea what a 
"semi-private tour" meant and when they called a company for us the lady actually was very sarcastic about our request. (Semi-private tour means you only go on the tour with 4-8 other people instead of loading into a huge bus full of people - more personalized, but not as expensive as a private tour. So the bottom line. Customer service at this place needed a lot of help.
The room was clean and comfortable but it got hot at night and the only way to cool it down was open the window. We did not face the street directly but it was really loud. We did not sleep well at all here and I'm a pretty heavy sleeper.
The area of town was definitely easily accessible but I, personally, would not stay near Union Square area again. If you are in San Francisco for shopping at chain stores, this is your place! There is Macy, H&M and 100 other stores that you will see in any big city. When I travel I prefer local neighborhood areas with local restaurants and bars. I think Nob Hill / North Beach or even Chinatown would be better suited for us.