The flat is great. Its location is perfect : not far from anything, but not in the historic centre, so in a quiet place.
The only little "problem" (if I may say), is the humidity of the appartment. But Aleksandra put a great dehumidifier that you can light up all the time, and that makes a real difference.
Aleksandra is really kind and active on the instant messenger of Airbnb.
Other than that, I highly recommend this flat for a few days in Prague with your lover, or just with yourself.