Before booking this stay in Prague I was a bit hesitant, but when I arrived to the location everything was great.
The location is perfect and in close proximity to the main attraction especially to the Old Town Square (5-6mins walk). Moreover, the apartment is really spacious, comes with a really huge comfortable bed, and has a kitchen that you can use for all basic stuff.
The guys even left us a booklet in the apartment summarizing all attraction in Prague.
The only downside is that the building has no elevator (Same as most old European Buildings) and there was a bit of a delay in the check-in (but was doable).
If you're planning your stay in Prague this is the place for you :)