The flat is perfectly as described: renovated, nicely decorated and exactly the same as on the pictures. It's located on the first floor and there is a lift, in case you carry heavy luggage.
You have enough kitchenware to cook, enough space to store all your belongings or even work and the flat is large and comfortable enough to accommodate 3 people at the same time.
The location is very convenient and quiet, not directly in the city centre but 5 minutes from the metro (line 2 - Larissa station) and bus stations by feet. If you enjoy walking, you can also walk to the city centre as the main attractions are around 30 minutes by foot. The famous archeology museum is only 10 minutes by feet. There is also a supermarket and some other grocery stores nearby.
Please note: I would like to express some reservations about the area. I read a lot of negative reviews after I made my reservation. Yes, it is certainly not the best area of the city. Yes, you can feel unsafe there but having stayed there for several weeks, I think that this is to be put into perspective and that the likelihood of a robbery, for example, is much greater in the city centre. Moreover, being a woman travelling alone, I have never been bothered in the area, even in the evening.
I would recommend following to avoid any problems during the evening: getting on and off the metro at Larissa station rather than Omonia and if you walk home, walk on the better lit main roads, avoid the area between Omonia and Metaxourgeío stations, as it can get very dark.
Finally, you always have the option of a taxi to get home safely. Anyway, if you are used to travelling, you should be perfectly fine.
Despite this, I had a great time here and would still recommend this accommodation.