Am word of advice: Get the NAME of the clerk who upgraded you, when successful. I noticed quite a few posts saying, "A male clerk", or "this older female." Take a minute to put there name in your phone, or jot it down on a note. Every stay, when I get an upgrade, I take a minute to find out the name of the general manager, or supervisor and either leave a sealed letter at the front desk or send a snail mail telling them what great service I got from a particular front desk person. You don't need to mention your upgrade, so you don't potentially trip the clerk up, but at least it gives them props to their supervisors for their efforts beyond the $20. I've done this at Encore the past few times I stayed. A particular front desk person saved us $200 and upgraded our room. When I came back months later, I called ahead to see when she was working, then checked in while she was working, acted glad (I was) to see her and mentioned that ow great she was last stay and how I sent an appreciative letter to her boss. She upgraded me for my second trip and only took a $20 after I forced it on her. Of course, I sent another letter, saying how the desk person being so nice had really increased my comfort level at staying there. Now I have an appreciative contact who might upgrade me beyond what she's done in the past for my next trip.