The non-profit I am part of retreats twice a year at a Christian conference center. There is the option to retreat for 5 days or 3 or 4 days. All meals are included but there is a limit on coffee service. I believe the price is over $300 (more for a single room) and unless you live on that side of the water, there is a ferry ride involved (at least $30 one way). Beautiful setting on the water and a shopping center is not far from the conference center.