Antonios was an AMAZING host. Very attentive and helpful during our entire stay. The place is great too, we stayed 3 nights and everything went well. Antonios definitely made sure we were happy and accomodated.
Staying in the cliffs of Fira and Oia are very overpriced so staying here, in between both, WAS VERY convenient.
We rented an ATV for 2 days and we're able to go to every beach and went through every road and landmark in Santorini, with time to hike around and take pics.
Unfortunately the city buses are usually full and won't stop for you (at least not during our time there), but you could have better luck than us.
The hike to Oia is great, it took us less than 2 hours, but we're pretty fit. We had dinner and saw the sunset there. The walk to Fira is around 35-40 mins and it's very nice, we also had dinner and saw a similar sunset there.
The hike to Skaros rock is also not bad from the apt, about 20-25 mins walking, plus hiking up the rock (10-15 mins), and the view from up there is AWESOME!
The tavern across the street is also great for lunch.