Panos place was nice. We were trying to do Santorini on a budget and this place was within our price range. We were happy with the location (the village of 'Imerovigli') It was quiet, extremely scenic and somewhat off the beaten tourist track. It has beautiful restaurants within a minute's walk of Panos place that overlook the sea. Another night we got a takeaway of pizza and beer and sat along the cliff walk. It was wonderful!
However, if you don't drive, Panos's place is not that convenient. From the ferry port we took a bus to Fira and from there another bus to Imerovigli. That went quite smoothly, even though the bus drivers were mad! However, getting from Imerovigli to the town of Oia or back to Fira was hard. Maybe we were just unlucky. We waited at the bus stop for a long time and in the end we had to get a taxi to and from Oia.
We had no communication with the host. I did message him before our arrival, but I got no response. In the end it didn't matter, all the details are on the listing and their reception is open until 10pm every day. There was someone there to greet us and give us the information we needed when we arrived.
The room was clean, spacious and had no mosquitoes, plus it had a view of the sea so I was happy!