Yes.

Keep in mind my experience tends to be at the higher end of the luxury hotel market. At a hotel where I stay frequently, or maintain a gym membership, or have a large number of special requests or last-minute suite bookings, I inevitably form a relationship with a manager or two. I will, every six months or after particularly useful service, offer a reasonable but not insulting tip. Typically (varying by country) these people are well-paid, salaried individuals who would be a bit insulted by a $5 tip usually reserved for a bell-boy. Generally $50/50Euro is a significant but not gaudy gesture of thanks. A bottle of champagne or another seasonal gift is also appropriate depending on how well I know the person. More often then not it ensures me continued attentive service from everyone in the hotel from the manager down, as well as the odd very significant (and otherwise costly) upgrade.


But, to your question. I think a pool manager is an in-between situation. I would imagine that you're not traveling to the Delano weekly on business, so the best course of action, and the most beneficial to the manager, would be to write a very kind letter of praise to the GM.