This place is great. The location and price can't be beat. The air conditioning was a HUGE plus for my wife since we were there in the heat of July.
Also, I lost my keys while walking around Prague. Sarah was out, but the guy she had helping out made me new keys and met me at the place within an hour. Communication and assistance was top notch at check in as well.
One thing that should be mentioned is the shower. It's one of those 1/4 circle / corner booth things. It's very small. The handle to control the water is also at elbow level so it is easy to hit it when you turn around and scald/freeze yourself. Also there is not a large reservoir of hot water. My wife and I fixed both issues by using the water to get wet, then after soaping/washing, turning it back on for a rinse. So if a luxurious bath/shower is high on your wish list you will be disappointed.
If, however, you were like us and just see this place as a spot to crash then you won't be disappointed. Sarah is very responsive. And really, the location is absolutely fantastic. Hotels nearby will be 3x more. Being able to walk literally everywhere is worth it.