we stayed in Karen's apartment for 3 nights. the location is perfect, you can go to the center of the city/tourist area only on foot. you also have a shopping mall just nearby, it means supermarket, pharmacy or anything you need is just 1 minute from you. if you want to go further, the metro, bus, and tram are also really close.
During the night, the street is really quiet. when you have a baby, you know what I mean ;)
you have all you need in the apartment. TV, washing machine, hairs dryer... Oh yes! the elevator, there is an elevator in this building. that helps a lot when we travel with a baby.
Prague is a wonderful city, we will be back in the future for sure. if we can stay in Karan's apartment again, it will be more than perfect.