I get what you're saying about needing a nicer environment to cleanse.
I would recommend looking on ebay - under accomodation rental/holiday rentals/lets..
I once had a wonderful 3 week holiday in cornwall at 3 different cottages costing 100 quid a week to rent from ebay listings!
Cornwall is lovely - peaceful this time of year. Many coastlines for wonderful walks and beach yoga etc.
Another place i've always loved is Wells next the sea - you can hire a static caravan right near the coast there. Again it'll be quiet this time of year. There's a lovely forest walk that takes you to the beach line too - forest full of hills and valleys...with sandy walkways...very serene.
Any pictureque place at this time of year should be a lot cheaper. You'll want a fair degree of comfort to do enemas (caravan toilets are tiny!) so a self catering cottage would be better.