We recently stayed here for 3 nights.
Family of 5 ranging from 14-72 yrs old. The property itself is very nice but be warned there are a lot of stairs for the elderly or very young.
The location is very good access to all the lovely side streets in Plaka and great access to The Acropolis but it is a very steep slope climb back up to the property.
The only thing we would advise is the bathroom situation which we did not see from the description or photographs. The main shower is situated in the main upstairs bedroom meaning no other guests can use yhe shower without being in the bedroom which can make it awkward with a mixed family or friends