the most i ever spent was for one night at the Jasper Park Lodge (in Jasper, Canada) for my brother's batchelor party a couple of years ago. I had around 25 people coming, so we needed something big and private. so i got a cabin called the the Mulligan Manor. 7075 sq ft, 8 bedrooms, 8 bathrooms, huge fireplace, kitchen, huge fenced off backyard, private parking, very private. it was around 6000 CAD + catering costs + booze. no complaints, we had a great time. i seriously doubt i'd ever spend that kind of money on a place ever again though, so the marriage better stick lol.
http://www.fairmont.com/jasper/Accom...uxuryIndex.htm