If you want to have a great view, come to Theo’s place! I travelled by walk or metro in the city but the place is close to several bus/trolley lines.
Close to the Kipseli where you can find many places to eat/drink. You also have a bakery, pharmacy, supermarket almost the corner (would recommend you to speak Greek though as the area is not a touristic one).
The place itself is clean, many utilities, bed is comfy and the terrace a really plus.
Minus point : be careful if you are tall as the bathroom is quite small. But anyway, you won’t spend most of your time in there :)
Theo is also a great host, can arrange you taxis to the airport, replies really fast if you have any question!