Well, it depends on how clean the room is! If it's just my hubby and I, and we kept the room very neat, then $5 is what we leave on average. If we're there with all the kids (as usually happens on Thanksgiving), then we may leave as much as $10 because they'll drop cheetos on the floor or leave their wet bathing suits on the carpet, etc.
We normally stay in Holiday Inn / Days Inn / Quality Inn / Comfort Inn, etc. I don't think we've ever stayed in a hotel with a bellman or a valet! :blushing: So I don't know what's an average tip for them.
And we always get clean sheets every day...at least we always have. Maybe it's done differently if you're there for an extended stay? We usually don't stay more than 2 or 3 nights in a row in any hotel.