We had a great stay at Filip and Tania's beautiful Apartment.
Very large, clean and comfortable room with an amazing view on the river, petrin hill, and the castle
It is indeed central to Prague, and only 10 minutes walk to Charles Bridge and and the old town...
A tram station is a few steps outside the building

Filip was a wonderful host, welcoming, happy to help and of very good advice
he even offered us to share his meal, that was very thoughtful and generous
Very easy to talk to... we enjoyed the nice discussions we had at the end of our stay, and sharing his granny's delicious fruits and pastries

We'll definitely recommend their place :)