A clean and cozy place, hosts were very friendly, met us in front of the building and showed us around the apartment. The neighbourhood is very chill and safe, metro station is just a 3 minutes walk away, a lot of restaurants and coffee shops around. We really liked the Falafelina's place, a very nice and friendly owner and very good food at reasonable prices, go check them out. :)
The apartment is equipped pretty decently, you can clean, do your laundry and cook, although the kitchen utensils are quite simple (we really lacked a whisk, but we could buy it at a local supermarket). Note that it takes at least 30 minutes for the boiler to heat water, so don't forget to turn it on in advance, if you want to have hot water in the morning.
In overall, it's a great place for a long stay in Athens.