I stayed at Tia and Mike's for three nights. All I can say is my experience staying there was fabulous. I reached the apartment post midnight and was a little apprehensive about the directions but Tia was always quick to respond and she kept that up until I left Athens.
The grand room looked exactly like the pictures showed. The space was neat and tidy with all possible amenities and it is very strategically located. While I had to work on one of my days there, I could find plenty of cafes nearby which had great ambience. Also, it's so well located that Acropolis is less than 15 mins walk which also makes it easier for a traveler to explore the area.
Tia was very helpful as I kept bugging her with plenty of questions and she was quick to respond. As soon as I came back London, I have already recommended my friends to reserve this Airbnb space! You all should too :)