We met with Yannis from "Boutique Athens" upon our arrival outside the building. Yannis was very helpful and kind and showed us to the appartment and the city.
The appartment is nice (nothing fancy) and has all of the necessary amenities. Note that the bathroom and shower are a bit small.
The appartment's greatest advantage is it's fantastic location. We didn't need to use any public transport during our stay.
The staff of the company were very helpful and were also kind enough to provide us with late check out.