The flat is well equipped and cozy, location is great, very calm area and it's easy to get anywhere on foot or metro. Hosts are very communicative and friendly, will help you in any situation.
I was pleased with oven, was happy to bake food there. I loved morning light and also the balcony is a nice option, though the flat is located on the first floor (not ground one). I got used to it soon.
Of the minuses I can say that the internet is not fast, but maybe it's just a common thing for Athens. If you're not doing video calls all day long, it will work out. I used mobile internet few times.