A very cool house in a very central place.
The place of the house is superb. You can visit almost all of the touristic places by foot. We did so. We did not use our car during our Prague visit.
You can find everything in the house what you need (except for a washing machine :) ).
And the house has a parking area in the courtyard. (Another great thing)
There are 7/24 someone in the reception of the building which is also great.
But be aware that some houses in Prague have double numbers (including Maria's house). It can be misleading if you use only one number in the map applications. Use "Get Directions" in the airbnb application to find the house easily.
As a summary: Do not miss the house if you find it available.