I've never hated any of the restaurants, but there are a few places that we won't be rushing back to.
Garden Grille--The food wasn't all that great, and I got dizzy. I've eaten at lots of rotating restaurants, but this one was more than I could handle. I think that the fact that you aren't that high off the ground, so everything that's standing still is so close, has something to do with it.
Mama Melrose and Tony's--Both were fine, but the atmosphere wasn't anything spectacular, and I can get better Italian food at restaurants closer to home.
This isn't full service, but I didn't like my chili at Columbia Harbor House. The menu there looks great, but neither DH nor I were impressed with our food.