This is very handy for the Syntagma metro (which leads direct to the airport as well as other places). We stayed here for a 24 hour layover, so that was key to us. However, it's also a great location for exploring Athens generally; it's on a very cute street with restaurants and shops, it's near to "everything" either by walking or via the metro. The space is large and modern, with cooking facilities and great A/C (which can be important in a city that can get hot and humid, of course!) Very much recommended.