If this apartment is available I suggest you stay here. It was large, clean, sunny, located close to a main tram station. The pictures on the website are accurate but once you're here you'll see that it's even nicer than you'd thought.
The apartment is large with 2 bedrooms that are seperate enough for privacy. Bathroom has a shower and a washer. You'd have everything you need for a pleasant stay in the beautiful city of Prague.
I highly recommend Milena's Airbnb.