We had an amazing time at Rosalina's place, it is centrally located in the old town, so we didn't use any public transport at all and walked to all the places from the apartment. Not to mention it's amazing view of Acropolis.
The place itself is very tastefully decorated, and it's so spacious for the two of us. Rosalina's has all the essential things in the apartment, like coffee, tea, salt, oil etc, which is very helpful. Even though there are air conditioning in the living room and bedroom, but it's nice breeze in once windows are opened, so we didn't have to turn them on at all during our stay.
Rosalina was also very helpful and an amazing host, she even organised taxi for us to the airport and recommended all the places to go to nearby.
Definitely stay at her place again if we are going to Athen again.