Zuzanas apartment was really nice and looked exactly like the pictures. The apartment was clean and tidy and the temperature was fine at night (not too hot as some apartments easily become during the summer). Zuzana placed a crip for our youngest kid and the other two slept in the living room. Plenty of room in the closet which even doubled as clothesline. We slept there for 3 nights.
Due to traffic we came almost 1 hour later than expected but the young woman waiting there for us in Zuzanas absence didn't seem to mind much.
The surroundings are nice and quiet and we didn't have any issues at all walking around with our kids, even in the evenings. We walked to all the tourist spots, no problem if you don't mind walking. Recommend the small pedal-boats on the river. A 5-person boat costed us 200 koruna for an hour and was great fun. Also the great view from the nearby hill is recommended. Our kids all walked to the top by themselves, and there was a playground close to the bottom.
Pro tip: don't eat near the Charles Bridge if you are on a budget. It cost approximately two times more than everywhere else a couple of hundred meters away from the hottest tourist spots!
I'll recommend Zuzanas apartment (and Prague) to anyone with or without kids.