Athanasios' place was great. Check in was really easy and he also kindly left us some fresh fruit in the fridge which was a lovely touch! The balcony's great and it was lovely reading in the hammock.
The noise wasn't too bad, other than the occasional train horn - but it really didn't keep us up. The bedroom was really great, but can get a little light in the mornings, so I'd recommend future guests bring sleep masks if they're easily woken by the light.
If you're taller than 5'6'', the shower might be a little low for you, but again, this wasn't really a big issue.
Overall it's a great flat and was perfect for our short stay in Athens. Thanks Athanasios!