Firstly, the apartment is great+also suitable for families with kids if you're looking for that. I don't think the pictures do it justice in that sense, in actuality the place is more spacious and even nicer. Having lived in Prague for a while myself I knew the location was excellent, really recommend it if you wish to see all the classic touristy places.
Secondly, Veronika is a great host-easily accessible both via airbnb and mobile. She kindly showed us around the apartment and was nice overall.