We stayed at Niko's place for 4 nights. The flat is very modern and done up to a very high standard. The location was brilliant as there was a large number of restaurants and bars, literally as you stepped out of the front door of the building! Additionally the flat is centrally located and just under 20 mins walk from the Acropolis. The check-in was seamless (thanks Stella)! I highly recommend Niko's place and will look to stay here in the future when I'm in Athens.