Luciano's flat is ideally located in walking distance to all the main sights (everywhere I wanted to go was within 30 mins by foot) and the metro stop is just 5-10 mins away if you wanted to travel to other parts of the city.
Nearby Thiseio is vibrant with market stalls and lots of places for coffee or food. In the opposite direction Gazi offers a slightly less tourist-heavy option, with trendy bars and restaurants.
Despite its handy location, it still feels slightly off the beaten track and was mostly very quiet at all times (apart from one of the local cats that liked a good whine overnight - but that's all part of the Athens experience!)
The apartment itself was clean, a nice size and had everything you need for a short break (for example, towels were provided, iron/hairdryer available too). Bed is comfy. The shower is powerful, but just requires the hot water switch being turned on a little while in advance (this was quick to do and Luciano explained how in his welcome pack).

All communication before and during stay was exemplary and the self check-in process simple and hassle-free.
If I'm ever back in the city, I'd definitely choose to stay here again.