Mike's profile states that he is the type of AirBnB host he would want if he were staying in a new city, and I agree!
From the get-go, Mike was very responsive in communication, wanting to coordinate arrival (offering car hire from airport), to arranging check-in - we were met by his buddy Vasilli who showed us how to get in/around the apartment (from the wifi, to hot water heater, and the laundry room), and gave us a quick 10-15 min walking tour of "the 4 parallels" - the major bordering streets where you're likely to spend a lot of your time.
Mike has done a great job of creating a welcoming environment - leaving some milk/bread/juice/coffee/fruit in the flat, luxurious towels, local greek shower toiletries, with a high def big screen TV and silent air conditioning unit. The unit is bright with tons of natural light and completely renovated.
Don't be put off by the seemingly abandoned buildings you can see from inside the flat, this unit is definitely a gem. Probably up and coming a few years ago, it has arrived. Slightly off the main tourist path yet only a few min away, you have 3 of the 50 WorldBest Bars within 3 min walk plus countless others, cool and hip cafes and eateries, all within a stone's throw away. Plaka and Syntagma Square aren't far away either.
If I come back to Athens, I'd hope Mike is still around and expanded his business/unit offering.