We stayed here for about a month..
First of all the location cannot be better with a supermarket within a couple of 100 meters, a wework (with a rooftop) if your remote working and many great lunch and dinner places. (If you are studying at Prague Film School this is the spot). Really a-grade.
Second of all the apartment itself is clean and the noise despite the central location is manageable due to strong double glassed windows. The internet is moderate (a minor improvement point) if used for non-heavy usage and there is no TV (mostly misser because I was there for a month). The washmachine was great, many plates and cutliers, cooking gear. Shower was good and toilet too.
Most importantly great attentive host (the door was unfortunately broken when we arrived but it got fixed and we got chocolates 🍫). She is reachable and also gave a map and customized tips (from places to eat, day trips and even got a map for Budapest the place I had to be at afterwards) through chat. Have nothing but lofty words for her.
I would come back if I ever need to be in Prague again. Thanks again Zsofia!