The apartment is very well located, five/ten minutes walk from Prague's principle sites. The area is nice and peaceful. Marcela is a perfect host: she is super organised and very kind and willing. She let us check out at 2 pm since our flight was in the afternoon. The room is very clean (as the entire apartment is), it is big and comfortable.
We really enjoyed the stay and if we'll be back in Prague we will contact them for sure!