A manicured property, friendly nearby hosts, and the best of what you will find in this area (or any other area). The Catoctin Mountains are 10 minutes away- hiking, fishing, and swimming- home of Camp David.
There are numerous wedding venues nearby and local wineries.
For History Buffs, there is no dearth of activities, from Gettysburg (a mere 30 minutes away) to the National Shrine of Ann Seton:
https://www.visitfrederick.org/things-to-do/history-and-museums/historic-sites/
For kids, be sure to visit Rose Hill Manor in Frederick, MD:
https://recreater.com/404/Rose-Hill-Manor-Park-Museums
Experience the sights of Historic Frederick, MD, a mere 20 minutes away:
https://virginiatraveltips.com/things-to-do-in-frederick-md/
Take on the thrill of Trout Fishing at the local Cunningham Falls:
https://www.visitfrederick.org/blog/post/fishing-in-frederick-trout-fishing-on-cunningham-falls-lake/