Let me start off by saying that all of the great reviews about the place / Zuzana convinced us. Our experience was good but not great.
This apartment has two main strong points: location and amenities - among which a very nice bathroom.
That being said, if you're in Prague for walking around like us (only went to the apartment for sleeping), then the €125 per night is a very steep price. The bed was actually pretty terrible (gave both of us (25years old) back pain), and we spent half of our stay with duvet and pillow covers for only one person strangely enough (it's a 2-person mattress but duvet and sheets are for a single bed). There was also only one towel. We contacted Zuzana, but due to some miscommunication within her team the problem only got resolved after two days and multiple messages.
I'm sure the miscommunication in Zuzana's team is due to early stages of automating the airbnb process (key pick-up from a locker etc) and that she will resolve this.