We had a great stay in this flat. There are only good things to say about the location, cleanliness and the amount of storage space, etc. It is central without being on the main tourist drag. It is also a very well-equipped flat with everything you need even for a longer stay, especially in the kitchen. Responses were always very quick. Thanks Hana!
Getting there from the airport is really easy: just take the 119 bus from outside the terminal and at the last stop (Nádraží Veleslavín) pick up metro line A to Jiřího z Poděbrad (nine stops) and then it's a 5-minute walk to the flat. You can buy tickets for the bus/metro in the airport terminal. Instructions on getting into the flat are clear.
Having a fan in the flat was a big plus when it was hot and I don't think the ad mentions one when it says there is no air conditioning and the bed is huge and very comfortable.
It is just 10-15mins into the centre/old town by metro or tram and you can also get to Prague Castle easily enough. There is an Albert supermarket just 2 mins from the flat.
Would definitely recommend this place and stay again!