Anna's apartment is pretty much exactly as depicted in the photos: modern, stylish, comfortable, and extremely clean. And the location is quite convenient in Mala Strana ("Lesser Town")—just a 5-minute walk to Prague Castle, Charles Bridge, and Waldstein Palace (my favorite—beautiful and the least tourist-y). I felt very safe staying here as a solo female traveler. While the building is on a well-frequented street, the apartment itself faces an inner courtyard for the downstairs restaurant that I think closes before dinnertime, so all 3 nights of my stay were very quiet and relaxing. Also, while Anna and Peter noted that the hot water reservoir is limited, I found it was plenty for a 20-minute shower. And while there was no AC, the temperature outside in early July still dropped to 65-70 °F at night so cracking the windows open was enough to keep the room cool in the evening.
Anna and Peter were very gracious and flexible hosts who provided several helpful tips about which ATMs to use/avoid and which grocery stores were most affordable. (I ended up cooking some of my meals, although food in Prague was fairly cheap compared to elsewhere in Europe!) I would highly recommend both this apartment and Anna and Peter as hosts.