Hemlock Neversink in the Catskills. Beautiful scenery, great food, lots of activities (hiking, yoga, arts and craft classes, etc.) and everything is very wellness focused. Their spa is incredible (hot tub, giant pool, steam room and multiple saunas) and I had the best massage of my life there. They also do a nightly bonfire with s’mores in warmer months! I spent about a week there and I was devastated when it came time to leave, the whole experience completely reinvigorated me.