Based on my experience, it seems the pricier the hotel, the worse and/or more expensive the wifi. We just stayed in a major hotel in Irvine with net access worse than a dialup. I complained in the review they emailed me. To my surprised, they call me, and explained they were completely redoing the net access, upgrading from a microscopic 2.5 mbs to 25 mbs and hoped that would fix the problem.
So, sometimes complaining helps.