I highly recommend Niko's place for everyone traveling to Prague. Good communication from Niko through the whole booking. Niko's mom was very friendly and helpful at the check in (despite the very limited English).
The apartment is clean, modern, and offers you everything you need for your stay (shower, kitchen, etc.)
The area is in my opinion one of the best in Prague and it's very fast to commute to the city, or anywhere really.
You will have a great stay at Niko's apartment!