I'm not sure about what they expect but I suggest the "Salathai Resort" for them. This resort is located 45 minutes drive from
Phuket airport and heart of C, one of the the most beautiful
beaches in Thailand. It has many recreational facilities for all ages such as golf courses, shopping centers and nightlife within easy reach.so it's definitely good choice of hotel for 3 of them. At Patong beach, water activities and swimming can be done,so just call Salathai Resort on +66 (0) 7629 6631-4 and make the arrangements, In addition visit
Thailand Tours page to get an idea of places of interest in Thailand, it would be helpful! have a nice trip!