Dimi's apartment is probably the best we've stayed in Athens ever! It's perfectly located, only a metro stop's distance to Syntagma, in a very nice residential neighbourhood (Pangrati) with a lot of amenities very close.
The apartment has its own front yard, it's super clean and super modern and we felt like home during our 4-day stay. Can't recommend this apartment enough - don't think about it, book it now!