As many have noted in the previous comments: location, location, location! You are in the heart of Prague and yet, because the bedroom window backs out onto the courtyard, you're able to sleep like a log. The place is clean, tastefully decorated, even if somewhat no frills. The kitchen is nicely equipped with all you need for making simple meals (though you are a stone's throw away from many restaurants).
I did struggle a bit with the lock (the key needs to be aligned just right), could not figure out the tv (Netflix screen would not load and did not allow me to plug in my own login), but these are absolutely minor issues.
All in all, great value and highly recommended!