If you are looking for the perfect place to stay in Prague, look no further. This flat is not only beautiful (I will get to that later) but it's within minutes of all the main attractions in town. Old Town Square is less than a 5 minute walk, the Charles Bridge is about 10 minutes away with the castle right across in about 15 minutes, the Hemingway Bar/Prague Beer Museum is 10 minutes away and you are surrounded by hundreds of bars/restaurants in the historic old town.
The apartment is beautiful, spacious, quiet and clean. You have an entire home, two floors, to yourself with a spiral staircase leading up to a spacious master bedroom and additional bedroom with shared bathroom. The downstairs has a spacious living room with couches/large TV and a fully equipped kitchen + kitchen table. My only FYI comment would be that the shower (since the building is from hundreds of years ago) is slightly awkward as you cannot stand up straight, but even traveling with a 6'4 person we would not even call this an issue. The architecture of the building, both inside and out, makes you feel as though you are experiencing the way of living many hundreds of years ago (with all the modern refurbishments of course). There are wooden beams within the flat's ceilings that have been there 300+ years!
In regards to the host, Maurizio and his family are the definition of super hosts. His brother greeted us upon our arrival, standing right outside the flat. As a FYI - if you Uber from the airport it only costs about 15 USD. The Uber cannot pull onto the flat's street (as it's car-less cobblestone street) but we got dropped only a 1 min walk away. He showed us how to use the keys (as there is a front door entrance way and then the key for the flat), gave us the grand tour of the apartment and then showed us a map with recommendations. Once checked in, they were attentive throughout our stay and the check-out process was easy as we just left the keys near the flat.
We stayed out late each evening and felt safe walking home. The area is very populated, well lit and in the heart of Old Town Prague, no issues at all!
Also - side recommendation - we had the best pasta we've ever had (even better than Florence and across Italy) at Pasta Fresca near Old Town Square. I would recommend this to ANYONE traveling to Prague, you will not regret it!