The hosts are amazingly nice, punctual and generous. They provided us, upon arrival a few, but necessary articles: (they were not obligated to do so but they did and it was very thoughtful) eggs, bottles of water, butter, cheese, bread, coffee..They also provided shampoo, detergent. The condo is clean, modern, beautiful. It has 3 A/C (one per room), and most importantly, a washing machine. We really felt at home.
It is closed to the metro and tram ( 2 short streets away). You are at 2 or 3 metro stations from Acropolis, Plaka, Monastiraki, Syntagma Square... you can take the tram #5, it will bring you straight to the beach and shopping areas. You can buy for 9€/person, an illimited public transit ticket for 5 days.
It will cost you around 50€ by taxi from the airport to the condo, but if you use Uber, only 30€.