Michel's little house really felt homely we loved it. It's really very spacious well kept and has everything you'd need when looking for a base in Athens. The location is in one of kolonaki's best streets. It's just a 5 minute walk straight down some stairs continuing straight down the one street all the way into the syntagma square . Here you will find the Metro Station plus many of Athens attractions plus shopping and restaurants. The walk back is always a good way to burn off a belly full of gyros as it's uphill. The road gets a little steep towards the top. Wear comfortable shoes and be very careful not to slip walking in Athens. The pavement is mostly marble it can be easy to slip especially when wet.
The apartment is ideally located to kolonaki's cafe's, bars and restaurants.
There's also a busy little fancy restaurant right outside. I read some comments that it was a noise issue. To be honest you barely noticed it. You're in the middle of the city it's never going to be total silence. The space consists of a very spacious separate bedroom and living space, neat bathroom, tiny but useful kitchen. There was cable TV and good Wi-Fi. As I said all you could need, I highly recommend this place it was very good value. The host is quick to respond and if he isn't available he has family that can assist in the area.