We arrived very late without having a SIM-card to call the host. He just knew approximately when we arrive and he was waiting for us outside, literally on the street to meet us. It was very generous from his side. The apartment is large and quiet (if you close the windows at night) . The location is so central that we came back in the afternoon everyday to rest a bit and to leave the things we've bought. The only thing to worry is if you want to sleep till late. There is a church nearby that starts to ring its bells at 6:30 every half an hour. For us it was good, since it helped us to start our day early:)
Thanks a lot, Dimitris!