Awosting Lake In The Summer
If you are looking for an easy hike with a possibility of a swimming, you must definitely take a hike to Awosting Lake.
The trail starts at Minnewaska State Park. It takes around an hour to walk the shortest trail (3 miles). There is a well-known Blueberry run along the trail.
Also if you have bicycles you can take longer trails. You will see entire area from above, waterfalls and rocks.
When you reach Awosting Lake there is a gorgeous beach to relax and swim. And watch friendly ducks, wandering around like they are welcoming you to this amazing place.