I usually leave $10 per stay, and usually have 2-3 night stays. $20 when I make a mess or use all the amenities, etc.

Usually, I leave the tip on the first day of the stay, with a note that says, "Thanks in advance for your service during my stay."

This leads to much enhanced service during my stays, like second robe in C level, lots of towels, etc.

albatross