Beautiful apartment about 2 blocks away from the Thissio metro station and within easy walking distance of the Acropolis, Agora, and Phillipolou hill.
The apartment is brand new and was easily the nicest we stayed in during our trip to Greece (we stayed in 4 different places), at least, and much better than any hotel I've ever stayed in.
The check-in/checkout couldn't have been easier and Alexandros is highly responsive and accommodating.
If you are thinking about booking, stop thinking and book.