Dimitris is an excellent host with a clean and centrally located flat. One needs about 15min by metro, or about 30min walk, to the center where all the attractions are. In addition, Dimitris was kind enough to help us with checking in, drove us to the flat, and even helped with information concerning main points of interest. Last but not least, he even left drinks for my girlfriend and me in the friedge and was always available on his phone.
Therefore, I highly recommend staying with him while visiting Athens since you will certainly enjoy your stay in this conveniently located, fully air-conditioned, and also very tidy flat.