I stayed for 1 week. Overall it's a great apartment, but there are some downsides. First let's start with the positives. Location is right in the center, apartment itself is very well furnished, fast wifi (~38 Mbps), kitchen fully stocked, very clean, nice lighting, 24/7 reception (can leave suitcase there on check-out), responsive/friendly host. So what's the problem? Well the apartment is on the first floor and the windows have no window guards. Since the apartment with the window closed is a bit hot/stuffy (in August), it's more comfortable when the windows are opened. But if left open, theoretically someone outside could climb up into the window. Realistically I don't see that ever happening because Prague is really safe, but I'd rather not have that concern on the back of my mind. The bigger issue however is the street noise. There is a bar across the street where patrons will sit/stand outside, so on Thursday-Saturday nights it is loud until after midnight or so. Then you'll have random drunk people walking by and be able to hear everything they say. It could be borderline bearable with the windows closed, but then you're not getting any fresh outside air and on hot days the apartment runs a bit too warm. But if you open the windows, the street noise from random people and cars is too loud. So on the weekends I kept the window closed. There is an A/C, but it's a portable unit with a tube that you'd literally need to stick out the window, and it's very loud. Overall it's still a great apartment, but I'm shocked that it's got a perfect 5 star review with 33 reviews, and nobody has mentioned the street noise. I hope that the host can install window guards, improve the noise isolation on the windows, and maybe install a real A/C until that doesn't require opening the window. Also another minor complaint, the full-sized bed has 2 twin-sized comforters instead of just one full-sized comforter. The apartment is otherwise fantastic, but not sure if I'd stay here again.