Yannis is a very welcoming and attentive host. He did everything he could to help my friends and I: he left us food (bread, fruits, juice, homemade olive oil...), a guide for the city, a taxi service phone number etc. Everytime we needed him, he was answering very quickly.
His appartment is spacious and has everything we needed (washing machine, cooking devices, iron etc.). There is a little store 100 meters away where you can go grocery shopping as well as a pharmacy. It is a 20-minute walk from there to the nearest metro station. The streets are a bit steep so be careful, especially if you have a lot of/heavy suitcases!
Apart from that, everything was perfect and we highly recommend you to stay in Yannis' home!