We had a great time at this place. The location is very central while being very quiet at the same time.
It was very clean and Nasos provided us a lot of information about the place, the city, places to be, restaurants, etc. Also he arranged an airport transfer for us at 4:00 a.m. (35 €).
All the highlights and excavation sites are in walking distance.
The place is very narrow but you get what you see on the pictures.
It's a perfect location for a few-day-city-trip when you just need a place to sleep. If you want to pass some time there and hang out it'll be to tiny and you have to keep in mind that - as it's a cellar - there is little daylight.
We would absolutely recommend it.