You might want to check on coupon connection whether anyone is trading a multi-night stay voucher for anything that you might have that might be of less value to you than the cash it would take to book the stay.

You can redeem marriot points for "travel packages" which give you miles and e-coupons or paper coupons for multi-night stays. Some people do an exchange when they need the miles, even if they don't have an immediate need for the hotel vouchers.

I'm not certain whether such vouchers actually are transferrable or what the terms and conditions are, but I do see them on coupon connection from time to time, so it's worth taking a look.