Overall: I came to Mykonos for four nights stay with three of my friends all in our late 20's. We were satisfied with the apartment.
Host: Nikos was very professional and communicative which was nice to have the responsiveness when traveling to a place for the first time.
Location: The apartment is located on a busy street right near the Fabrica bus station which is within walking distance of everything you need. We didn't have to take a cab once for the whole trip. The Fabrica bus station is key if you don't want to rent a quad and get down to the beaches for a cheap fare (I believe about €3 per person for a one way trip to paradise beach). There is a mini market right next door which has all the water, beer, liquor, snacks that you probably need. The snacks and liquor prices were on the more expensive side but expected for the touristy island. It's worth noting that the neighbors to the apartment did have a complaint against my small group, rightfully so as they live there year round and we were there to capture the full Mykonos nightlife experience which often led to some late night / morning walks home and I'd admit we were loud at times. As long as you take note of this and respect the area, you should have no problems.
Apartment: The apartment / home is a two story private home. When you walk through the front door, you take a few steps down to what feels like a cool Greek cave where you'll find the living room, kitchen, and small bath. The home feels a little dated but we didn't plan on staying in the apartment much so it worked out perfectly for what we expected and we're looking for, especially considering the price. Upstairs you'll find two bedrooms with what I think were queen size mattresses, closets, and the full bath with an older small shower. Only real downside for me was that there was no wifi so was difficult to search for things to do within the apartment if you're relying on wifi when traveling as I was. However, I found that if you walk right outside into the square by the bus station, there's a free "municipal wifi" that is a bit spotty but I was able to connect to when needed. Pretty much every restaurant and bar has wifi as well, so was not a huge concern but would have been nice to have.
For the location, responsiveness of the host and price, there was not much more we could have asked for in an Airbnb in Mykonos.