Pros: great location (central, less than a 10-minute walk from Syntagma Square metro station, lots of restaurants and shops nearby, very walkable to Acropolis), clean, spacious, and Liberty is very quick to respond
Cons: building may feel a little unsafe at night for solo female travelers as lobby is unmanned and left unlocked till 9pm and hallways and stairs are not well lit. However, I encountered no issues while staying here.