Next trip to Athens, I would definitely try to stay with Romanos and his family again. Romanos met me on arrival to show me the studio and provide great tips for the area. And the treats his mom made me on check in were just lovely!
The studio and their home is beautiful. I loved sitting on the balcony porch above the garden. (Very relaxing after a day of walking all over the city). The location is just far enough away from the heavy tourist areas but still close enough that you can walk to them quickly.
The apartment was spotless. Their is an air conditioner for the hot Athens days but the windows allow enough of a breeze that you probably won't have to run it. And the studio also has a great little kitchen space with everything you will need to make meals if you want to dine in.
I only wish I had stayed through the weekend. As I was leaving Saturday there was a market being set up outside with fruits and other edibles!