The flat is amazing. The location, the amnesties: everything. We enjoyed walking through Prague throughout the day and cozying up in front of the TV in the evenings (we watched Netflix and YouTube via our Chromecast however the TV has a Netflix button too).
The flat is really quiet despite being a stone's throw away from the center. It also features a dishwasher, a washing machine and a tumble dryer. There's also a Tesco nearby. The flat has frying pans, pots and other utensils needed for cooking. Minimalistic decorations are nice, the place was also spotless when we arrived. Hands down it is the best airbnb I have ever been to! It really felt like home to us.
One thing to note though, even though the apartment building has a lift, the lift locations are positioned between floors so there is no step-free access to the flat. It was not a problem at all for us, however this might be important for you.
Another minute complaint from me: the hot water would run out on me if I took a bath. I ended up taking a couple of lukewarm showers after the baths. Again, I don't think it is a big deal and I feel quite petty bringing this up.
Overall wonderful experience. Don't hesitate over booking this place.