No tip reimbursement from my company either. I guess spending 365 days a year in hotels has biased me toward the generous side. (I've convinced myself that "it all comes back...just not yet!") I'm not well-compensated, and I do my job more as "public service" than anything involving money.

Lounges, I usually tip $20 for a week.
Shoes, probably $5, whether delivered or not.
Room service, I often leave a bit over the included "service" - a couple of bucks.

Just one guy's view.