oddly enough i just finished my 15th stay there. when i checked in no upgrade but i said i would wait for a suite and after a couple of minutes they said not today but no problem tomorrow. if you care you might try this.
My last stay they did not have a suite upon check in but the front desk person said they would have one the following day and ask what time I would be outside my room and they would move all our stuff to the suite. Next day, stopped at front desk and got new keys to our suite and all our stuff was in same position as we left it in the previous room. That is service.