We were there in late April/early May. The highlight of this unit is the incredible -- essentially 360 degree -- panoramic view of the caldera, the windmills, and part of Oia from the top-most balcony. From there, the sunsets are absolutely stunning and you will probably have people pointing at you jealously from the paths below. There is also a "back" balcony off the main floor, plus a front porch. Paraskevas was easy to reach, friendly, and made helpful suggestions. Much of Oia gets very crowded, and during sunset, any ledge with a western view gets very crowded. That said, we'd have folks walking below during sunset, but overall the unit and its location were extremely private and quiet.
The unit does not have a washing machine so we paid one time to have laundry done. Basically, the housekeeper, who usually came 9-11am, picks it up one day and delivers it all done the next morning. It's a bit pricey, but worth it for light packers. There are steps up to the main living level and one of the two bedrooms, and very steep steps (almost a ladder) up to the second bedroom. From that second bedroom, there are a few more steps and a ducking squeeze out onto the aforementioned top balcony. The one real negative was hot water. We typically showered in the morning around 9am and in the evening from 9-11pm. I estimate 75% of our showers faced a moderate to major hot water issue. One morning, we had no hot water at all. Another evening, we had 7.5 minutes. It was pretty random, too, so you were always under threat of a sudden change to tap temperature. Apparently, this is a result of water pressure issues?
In all, we would stay again. The balconies, the privacy, and Paraskevas outweigh the hot water negative. I also recommend doing the Oia-Fira hike/trail. There are some absolutely stunning views to be had -- my Garmin GPS watch indicated a total of 7.25 miles (from this unit) one-way and elevation gain of 1,700 feet. In Oia, we enjoyed the Roka and Thalami restaurants. A trip to the red sand beach was also worthwhile.