Quiet Summer Resort?

We are trying to surprise my parents for their 50th Anniversary in July. We are looking for a quality resort, not a party place with excellent restaurants and shopping. My Dad has Parkinson's so we would like as much as possible on the resort. Looked at the reviews for Camdon but was discouraged by the complaints of the noise and parties. Any ideas work where they would be treated like royalty for a couple of days?

Karen