We have stayed a couple of times here. The location could not be better very close to syntagma metro stop so very convenient for the airport. It's at the start of plaka and you can basically walk everywhere. The area has become very trendy with lots of bars and resteraunt's. It has elements of its old function as an office space but these conversions are typical of the area (I lived in one down the road for two years).
Location location location is what I would say. Will be staying again next spring.