Hi Peter,
Firstly, I would just like to say how extremely helpful and accommodating you were.
I had multiple queries before and during the week; you promptly answered all of them, and nothing was too much trouble for you!
In terms of the flat itself, the location was very central, which made it very easy to not only visit the main central sites, but also to jump on public transport to pretty much anywhere in Athens and beyond.
The price for staying was competitive for what facilities in the flat were offered and everything worked.
All in all, a great base to be able to get out and explore everyday!