Giannis' place is in the center of Athens and close to the views and restaurants, bars, metro.
check in and check out is very flexible, Giannis is easy to talk to. he always reply quickly and helped me solve the issues.
His cleaning lady is not all responsible, first day she didn't make bed for me, so I had to sleep on towels, then second day she came with new towels which apparently used, I found many women's hair on the towels.
except this unpleasant issues, I had a really good stay in Giannis' place, and recommend to people who visit Athens.