Start your search by going to dharmanet.com
They have worldwide listings of dharma groups.
I know that Gampo Abbey in Nova Scotia, Canada, has short-term openings. You pay, and you also help out. But they do expect you to have some training in their particular traditions of Buddhism. Also, you will be sitting and meditating for 4 hours a day. Can you do that day after day and not want to scream?
As for being isolated from "normal" distractions of the world, this is not useful. Nor is it Buddhism ... is more about escapism.
The distractions of the world are fuel for your practice of Buddhism. Buddhism is about observing what goes on inside yourself, and the more distractions there are around you, the more there is to observe.
The general advice is to start right where you are, and not go trying to change outer circumstances. Buddhism is about changing inner circumstances, not outer circumstances.