dviop.org Dominican Volunteers International
The dvusa that have come to Grand Rapids, MI lived in community, shared in all aspects of the congregation and were assigned work in any number of areas. I can give you names and numbers if you decide you might want to go with them. An 11 month plus commitment . Awesome !!!
The sisters of Mercy of the Americas also has Mercy Corp which is quite nice also. I don't know if you would be housed separately or in one of the homes of the Sisters
I am particularly fond of the Salesians of Don Bosco. Their mission is to serve the young and the poor, especially at risk youth. Their are plenty of opportunities worldwide as a Salesian Lay Missioner. Their link is: