I am curious as to what others actually tip housekeeping for tidying up their rooms. Do you tip daily (since different maids may clean your room each day)? Do you leave a larger tip upon departure since there's more cleaning to do? I wanted to get a feel as to whether I'm being cheap, generous, or average. I usually leave $5/day and up to $10 upon checkout if I've stayed more than a day or two.
I try to follow the local customs of the country I'm in, so I tend to tip most (assuming the service is good) in Rome and Paris. In the US, at higher level Marriotts I usually tip $5 a day; at Courtyards about $2. Here's an article that suggests what to do: