I live near Aqua Beach Hotel, so when I found the name of the hotel I checked the internet to find out information on this hotel and found this site.
As of today, April 17th, there is still a lot of work to be done. Doors have not been installed. The landscape is still bare. There is an army of workers so we have to wait and see whether or not it can be completed for May 24th.
Many in this forum have expressed a fondness for Tigaki. The Hotel technically is located in the municipality of Kos, and is not considered part of Tigaki. Tigaki is a short distance away, but a mode of transportation is required. Walking is a good hour and fifteen minutes away. Bicycles are o.k. during the day time, but bad street lighting make it dangerous during the night. Scooters are a good way of getting around, so do not forget your driver's licence. As of last year there was no bus service, but it MAY be extended this year (maybe not).
The beach in front of the hotel has no sand just stones. There is a good beach within a five minute walk, but as of last year had no ammenities (sunbeds, restaurants etc.)
On the positive side, this does seem like a good hotel, great for the kids. The view is absolutely spectacular. Clouds during late spring and summer are a rarity.
Hope everyone has a great time in Kos.