Manto's apartment is really cool!
The view of Athens is as awesome as you can see in the pictures, and it's the perfect place to chill and have a drink.
The apartment itself is pretty basic: the bathroom is really small, and there isn't a proper kitchen, for example. I had no problem with it for this trip, but it certainly depends on your priorities.
Personally I'd totally recommend it, the place is quite unique and totally worth it