We stayed at Dimitris for 4 nights with my parents and boyfriend. The appartment was nice and clean. We did not meet Dimitris, but kept in touch via messages during our stay. He was very helpful. We appreciated that it was no problem to arrive late evening and the cleaning lady showed us around.
The location is great, the metro station is about 3 mins walk. Supermarket and bakery is just around the corner. It's not a tourist area but ideal if you would like to see how locals really live. We liked the small cafés and gyros restaurants in the neighbourhood, where we got the nicest service.
The flat is small, more suitable for 2 than 4, but if you are close friend or family, it's not a problem. :) The terrace is great!
I would recommend this appartment, good value for this price.