I would highly recommend Dennis' place The Four Winds. It is well situated in a safe and pleasant part of Athens, 10-15 mins leisurely walk from Syndagma square. It is very clean, modern, stylish and uncluttered.
It was pleasant to sit in the balcony and relax. Nice views of the Acropolis and Lycabettos hill, especially when lit up at night.
The modern bathroom and laundry facilities were appreciated. The high quality Korres toiletries were a pleasant surprise and the fridge had welcome water and fruit drinks. Small touches indicating a generosity of spirit and the true Greek
"φιλοξενία" hospitality.
Dennis is surely a super host and went out of his way to help me find another place, when I unexpectedly needed to stay another day. Most places require a two day stay.
I would definitely like to stay at The Four Winds, when I return to Athens.