This apartment is absolutely spectacular. You will not regret staying here. It is SO close to the square and honestly, to everything else. I walked EVERYWHERE, no need for taxis or even bikes/scooters. There are restaurants, sights, activities, bars, clubs all within 5 minutes of the apartment.
There's plenty of space inside, with a lovely living/working area. Lots of natural light as well! As soon as I arrived on the narrow street where you enter the apartment, I couldn't stop smiling... Prague is a beautiful city and if you're traveling alone, as a couple, or as a small family, this place is a perfect home during your stay.
I will also say - Honza was amazing with the instructions on how to check in - it was super easy and simple. I arrived at about midnight because of my late flight in from London, but I had no trouble at all.