The flat is well located, 2 min from public transport that can take you to Prague 1 and/or the castle area. Distance to city centre is walkable, around 15 min. Neighbourhood is lovely, with many good restaurants and cafes.
Marjan was a very communicative host, we had a problem with the shower on the first day and he promptly had it fixed.
Photos of the flat are accurate, it's quite spacious with a well equipped kitchen and bathroom.
Downside was the cleanliness. The flat needs a good clean.