The place is in Kolonaki, the poshest area in Athens (Espresso 3€) and the mayor living around the corner. The view is amazing. The rooftop terrace is very spacious but a lack of (comfortable) furniture and sunshades don't make it really possible to use the big space.
I enjoyed the minimal furniture, but the bed was just too hard.
The internet is rather slow and make working from there rather painful.
The space is just big enough for one person. Two I imagine a squeeze.
There was no net against mosquitos in the balcony so be ready to go on the hunt at night (as many small splatters on the wall indicate I wasn't the first).
The hosts are nice and live in the apartment below so privacy will be limited.