I have heard the burgers there were good from many people. The only negative I heard was they were too big. The fish is excellent there too.
As to pizza. My wife and I gave up on finding pizza we like in Negril and just make it ourselves at least once a week. If you have a kitchen you can get away with that. We also like taking coco bread, warming it (toasted or waved), adding a little pizza sauce from a jar and some cheese, heat it a bit more and enjoy.