Nelly's place is great! Very comfy and clean. The communication with Nelly was amazing. She was very approachable, eager the help and provide all the helpful info and she made the check in and check out super easy! The location of the apartment is great if we're judging it based on the proximity of the main attractions! It's only a 25 minute walk from the Acropolis, 15 minutes from Monastiraki square and all the great places for food/drinks. The only disadvantage is the general location. It's in a not-so-pleasant neighbourhood, meaning they are lots of dark alleys, garbage all over the streets, homeless people sleeping around and we actually saw a few needles on the sidewalk. We didn't feel very secure walking on those streets, especially at night.
If you can look past that, I would recommend Nelly and her apartment 100%! :)