Konstantinos apartment was everything we hoped for our stay and more. The apartment was very spacious, completely new, the beds comfortable and with everything we could need. In August, during a heatwave, air conditioning and fans are a must, so it was great to have a nice place to hide from the sun and cool down. It is located in a really nice area, just a 10 min walk away from Acropolis and 10 min walk from Monastiraki, a great area for bars and restaurants, and I would say around 20 min from Syntagma, so we could walk almost everywhere.
Konstantinos was a great host, he was very nice and easy going and helped us with everything we needed, he would always answer the phone right away.
We stayed in Greece for 2 weeks and we booked Konstantinos's apartment for our first days and las ones too (we spent a few days at the Peloponese in between) and in the end it felt like home. We'll definitely repeat!