I cannot rate villa kappas high enough! We were a group of 12 adults plus a 1.5 year old. Alexis & George provided a crib and high chair for my son, and even helped us get to the local hospital in the middle of the night when my son was having asthma issues (by the way - for those who are asthmatic the wind and dust in mykonos can irritate it). The villa itself was more spacious than I realised! The pool house has its own kitchenette, bathroom, and sofa bed in the living room away from the main house. The whole house has dark shutters which helps if you want to sleep in… though I recommend waking up for the beautiful sunrise! There are individual AC’s in each bedroom. The pool is pristine and has good Bluetooth speakers. It can be windy at times but that is good because it means there are no mosquitos! Kiki’s tavern is worth the 1 hr wait - just bring a book or a friend to have a drink with while you wait (and maybe only go in small groups). The beach is an easy walk, and the spa behind the house is great as well.
Alexis provides the name of a driver who is easily contactable however it does cost €10 per person per trip plus €20 for each stop (which can add up with 14 people doing various activities over the weekend). Alexis was also able to arrange someone dropping off an ATV for us to have for the weekend which made it easy for people to go in and out of town to get groceries and water (just make sure it is 450cc has space for groceries at the back). I do recommend stopping for groceries on your way to the villa and taking the time to stock up (especially on water - we went through approx 50L of water per day). Hot tip - you can also order water from dominos if you are desperate.
We did the catamaran sunset cruise one day and had chef Kostas cook dinner at the house for us one night. I recommend both!
As a separate note, unrelated to the villa, pretty much everything in mykonos is cash unless you want to get slapped with a 15-25% surcharge. We had to make frequent trips to the ATM in town so I would bear that in mind when planning ahead.
Definitely book this place if you can - what a memorable few days!!!