We had a wonderful stay at Lisa’s place. We visited for a wintertime “workation” and it was sunny, quiet, and peaceful. Ermoupoli was very quiet but not deserted, but we can imagine is gets super busy in the summer. The apartment was about a 10 min walk up many stairs from the port with all its restaurants, etc.
The wifi was great, the bed was comfy, and the place was spacious. Lisa was so kind, allowing us to check in early and check out late because of the ferry schedules (only 1 arrival and departure per day in the winter). As other reviewers have noted, the shower head is a bit tricky as you have to hold it while showering, and the tap water in Syros isn’t drinkable. Be ready to buy bottled water at the grocery store by the port and haul it up the stairs to the apartment. Overall, the only thing we would recommend is that the couch/futon is very uncomfortable with the springs poking you everywhere, not a great place to relax. But other than that we had an amazing stay.