Not sure where you're based, but Topcashback in the UK gives cashback for Hilton bookings. However, the cashback has to be converted to Tesco clubcard points. Current cashback rates are 2% for USA bookings and 4% for other worldwide bookings. This rate varies occasionally and I have seen 5.5% rate. This is not such a bad offer as clubcard points can often be boosted to double, triple or quadruple their value for different cash-in offers. I recently doubled my points and got a "free" Ipad for grandchildren for £199 worth of points. Also, the points do post, although it takes several months, unlike when Quidco used to offer cashback, half the time points never posted or didn't get paid.