I wholeheartedly recommend Charming Studio. Great location - close to many atmospheric pubs in the area. Beautiful and comfortable furnishings. Moreover, at a good price. The terrace overlooking the Acropolis is breathtaking. Breakfast with such a view is my favorite Athens memory.
I've never met a host like Laurent. We had a nice introduction to the apartment. Laurent also told us about great pubs and other locations in the area. He is committed, helpful and outgoing. I have no objections! 10/10 stars stay.