The hotel overall was good and I would come back...
The power outlet near the sink in the bathroom is for 20VA only. Which is not enough for a water flosser (waterpik). So, I had to use the one by the toilet and floss my teeth over the bide, LOL :)
The temperature in the room cannot be controlled by a thermostat with the precision of a single degree. You have to adjust it by trial and error, controlling the valves at the radiators by the windows. And open the windows at night to make it cooler... For those, who have troubles sleeping due to night sweats - it could be problematic.
The king bed (in the description) is not king, but rather queen (per American standards). Something odd there - it has two separate twin size blankets - what if I want to be under the same blanket with my wife? :) And those blankets were short for me (I'm 184 cm tall).
WiFi is terribly slow. I had to use a hotspot from my phone to work on my laptop.
Breakfast - it would be good, if the choices of vegetables/salads would be wider. But overall, the breakfast was good. Fresh yogurt, whole grain bread, vegies, sliced deli varieties and few sweets. Fried eggs and omelets can be ordered (for free). Coffee machine makes an absolutely great latte.
Best of all - the location. It's right in the middle of the historical part of Prague and everything is right there. You can literally walk through the whole historical district from that hotel without the need of getting a taxi.