This place was great! The apartment was clean and comfortable. Everything you'd want to do in Athens is basically a 30 minute walk or less. There are many restaurants close by. We went to a nice Tiki themed bar that was 5 minutes away for late night drinks. There's also a 24 hour dinner a few minutes away to grab some food after late night drinks.
Lots to do and see within walking distance as I said. The Acropolis, Mars Hill, The Old Greek Market, The Old Roman Market, and tons of shops.
We used their driver service to get to Athens from the airport and back. The driver that picked us up from the airport gave us tips on where places to see. He gave us a little Athens history on the way. The driver that picked us up to take us to the airport was a God send. We overslept, but he didn't leave. He called us several times and woke us up. We left 30 minutes later than we planned to head to the airport, but he still got us there in plenty of time.