The best host ever! Really helpful and even anticipating your questions and worries. We felt as treasured guests all the time we were in the city. It was winter festive season, and there were sweets on the stairs, Christmas decorations both in private and public spaces. Fridge with free soft drinks and a coffee machine on the public terrace. Umbrella stand with umbrellas (really handy during winter).
Now for the apartment: food in the fridge, pristine linens, towels, everything, stacked WC - even bath salts were there. Huge TV in the kitchen, three different coffee makers, all the necessary appliances, two ACs and three different heaters. Private balcony without any view, but still cozy.
The apartment is located in a few steps from EVERYTHING. Minimart, a full-fledged AB-Market, a great confectionary called Artemis (try their eclairs), the best restaurants in the city, Acropolis, pinball museum, you can even walk to the Archaeological Museum, although it takes about 40 mins, but we didn't mind.
The only downside you must keep in mind is that there's a restaurant right below the apartment (amazing chicken in feta cheese), so you can hear the music during the night. Not loud, but sometimes audible to the point of recognizing songs. If you're a light sleeper, you might consider other places. Didn't bother us though.