I have a retired friend who spends around 6 weeks each year at Mepkin Abbey in South Carolina. Quite a few people do this sort of thing. It's a Trappist monastery (Cistercian, with strict rules) with guest houses for retreatants. (They do take in married couples as retreatants and you probably need to be Roman Catholic, but I'm not sure.)
He does whatever labor is assigned to him - from baling hay to cleaning toilets, observes the rules of silence, and makes it to all of the Masses (beginning after the morning bells at 3 AM).
He returns home "cleansed and refreshed by the Spirit." The guy was a drop-out seminarian, USMC in Vietnam, and, as he describes himself, a "kick-ass businessman." He is, indeed, a tough SOB who loves the Lord.
The Abbey is an old plantation on the Cooper River, north of Charleston, donated to the order by the Luce family.