Plus: great location (10 mins walk to Acropolis, 4 mins walk to metro M2 line, 4 mins walk to supermarket); quick response (Irene always response to my messages fast); great guide (Irene left a self made guide at home, it is useful if you want to take any tours around, also with bus/ tram ticket info, as well as how to get to/ from airport.
Minus: the only thing is the first night I did not sleep so well, because after I lied down, I smell smoke on the pillow and blanket. Irene told me the second day where to find clean linen. I am very sick of the smoke (as I am always sensitive to it) and this is the only minus point. So I guess previous guests smoked there and linen are not changed.
Overall, I recommend Irene’s place for tourists who would like to explore Athens.