I guess it all depends on my mood, where I am, and the likelihood of actually getting a different room that I'll consider better. I've occasionally been offered an upgraded room but at an upgraded price. I've always declined their generous offer, but if things are bad enough, I'll look for a different hotel the next day. If they aren't willing to make a customer happy, I won't give them the satisfaction of getting more money from me than what I planned to spend.