Mops is located in one of the hottest little streets in St. Petersburg - if you're looking for bars, gastro pubs, restaurants, night life - this is a great choice location-wise. The spa next door is really nice, if you're looking for a relaxing massage or any kind. Really high level spa.
Unfortunately, I stayed in room no. 1, which is literally attached to the reception desk. The room was a bit oddly shaped and the bathroom had a really musty, funky smell throughout the 3 days I was there. I immediately asked them to look into it, but nothing was really done. A technician showed up for a minute, but I don't know if that was just to make me feel better. Nothing was really done and the place really smelled moldy.
Breakfast was...a sad affair. I actually could not believe what we were fed - a prepackaged plastic tray that was literally thrown in the microwave in front of me and over-cooked. It consisted of a microwave white bread, eggs of sort, and other things that were almost inedible. They also cut 2 pieces of a tomato and 2 cucumber slices. That did not help the situation!
Staff was nice enough. A few girls at the reception were a bit stern and morose, a few were a little more perky. After staying at a larger hotel in Moscow a few days earlier that was not much more expensive, cleaner than my own home, with an amazing courteous staff and an incredible buffet for breakfast that blew your mind and fed you for the whole day I would say...one can do much better than this.