Me and my sister had an excellent stay at Tong's! We stayed for 3 nights, the apartment was very nice, full of amenities, perfect location! Even though it is close to everything in the historical center the apartment is very quiet as well. We had an early flight and we got there before check in time, there was another resident in the room so we couldn't check in but Tong safe-kept out luggage which was highly useful to us!! We went on with our plans for the day and returned later on to check in! He also offered us the possibility of a late check out (unfortunately had an early flight out as well). I would totally recommend staying at Tong's and it will probably be my choice next time I visit Athens!