We stayed in this apartment for three nights in July 2019. The location - a stone’s throw away from Monastiraki Square - is fantastic.
It was very easy to get to by metro from the airport (and vice versa). The apartment was well within walking distance of many popular attractions and restaurants.
The immediate area around the apartment is very trendy and hipster.
The apartment has two air cons, one in the living room, and one in the bedroom. The water pressure in the shower is strong. The only minor annoyance is that you have to flick a switch from the switchboard 10, 15 minutes before you have a shower.
All in all very pleasant stay. I’d stay here again if I come back to Athens, and I’d recommend to others.