I've finished the third episode and am really enjoying this so far. It's what I expected, in a good way. The first episode lays the nostalgia on pretty heavy, but after that it's settled into cheesy sitcom mode nicely. Gibbler is especially funny and I'm enjoying the kid characters, too.
Some of the negative reviews I've read around the web seem exceedingly harsh. Fuller House may not be for everyone, but it's far from awful. I'm not sure what people were expecting from a revival of a 20+ years old family sitcom that embodied all the cliches of that era but still managed to make you laugh and make you feel a little warmer inside.
Maybe I'm getting old and boring, but this feels like a pleasant alternative to the more mean-spirited comedy shows of today (I'm a huge fan of the latter). Gimme all the group hugs and life lessons!