I know it was seen as a disappointment, but I haven't seen a lot of outright hate for it. There's a lot to love, but it does have a bunch of little problems and unpopular decisions. The biggest problem with the game is that it feels padded. Collecting coins is something I don't enjoy doing, and it's what you'll be doing a lot in Sunshine.
I'd say you may have a good time with it if you don't push yourself to 100% completion, and don't mind a difficulty curve that is all over the place. I prefer it over Mario 64 at the end of the day, so it must have done something right.
Edit
Ah, you guys made me remember the pachinko stage. Video games don't usually make me angry, but that one...oooooooh boy it tried my patience.