When I was there a few weeks ago I also had a very slow internet connection, using the wired connection solved that problem. The next day the wireless connection was working again.
I had a bad experience with one of the rooms (2nd floor front side) where around 10pm some cooling equipment on the roof right next to the room started vibrating so bad I could not sleep. After complaining I got another room straight away, but I was not amused that I had to get out of bed and pack my bags.
The problem also seemed to be known, really annoying that they gave me that room. The rest of my stay was fine however....