Great apartment for the value! There are views from both balconies of different sides of the island - yes, the one with the hot tub is eye level with people inside a restaurant but it's not that bad (and at night no one will see you anyway b/c it's dark). Located right off the main walkway through the city but far enough from the end of the city to still feel very private and quiet. Everything is modern and matches and feels a bit like a hotel room.
The kitchen supplies were VERY basic so don't expect to do much cooking and no storage for left overs (cling wrap, bags, tupperware etc) so be sure you plan for that if you do cook. (There is a fridge, oven, and stove.)
We had several small issues in the beginning that were resolved quickly and easily but did require us having someone to the apartment more than once - hot tub was not hot the first night but they were already working on it; cable was out (not that we watched it really); coffee machines not equipped correctly.
There are many fancier places to stay in Oia that probably have less obstructed views but we were comfortable and had most things we needed at a much cheaper price than others we looked at. Also, you would never know this from listings and pictures but many of the balconies, hot tubs, and pools at other places in Oia had amazing and unobstructed views of the sea but were very visible to others sitting in restaurants or other apartments above them - Elea Casa is much more private than this but you are a bit further back in the city so views are slightly less "perfect" - just depends on what you want and how much you want to pay. We'd go back here. :)