As puppies, poodles are often exceptionally mouthy. All puppies will bite to a degree, and retrievers tend to be especially orally fixated. Some poodle pups take this to an extreme and can be little terrors. But they do grow out of it! By 8-9 months the mouthing should be mostly gone and as adults they should not be mouthy at all. They make great family dogs as long as you have a training plan to teach them good manners as they grow. It is strongly recommended to take a puppy class and obedience classes with a good trainer to help guide you.
In regard to sweetness, dogs are individuals. Some poodles are cuddlebugs that love to be pet show affection readily. Others are a bit more aloof and show affection in more subtle ways. Puppies often go through aloof periods and become more affectionate as adults. Poodles do not usually have a lab or golden retriever temperament, and tend to be more intellectual and sensitive. But they form very deep relationships with owners and I wouldn't say they aren't sweet. Going to a highly reputable breeder that temperament tests and pairs pups with owners based on temperament is a good way to improve your chances of getting the perfect puppy for your family. If you can, meet the breeder's dogs and see if they're the sort of dogs you're hoping for in a family pet.
In regard to sweetness, dogs are individuals. Some poodles are cuddlebugs that love to be pet show affection readily. Others are a bit more aloof and show affection in more subtle ways. Puppies often go through aloof periods and become more affectionate as adults. Poodles do not usually have a lab or golden retriever temperament, and tend to be more intellectual and sensitive. But they form very deep relationships with owners and I wouldn't say they aren't sweet. Going to a highly reputable breeder that temperament tests and pairs pups with owners based on temperament is a good way to improve your chances of getting the perfect puppy for your family. If you can, meet the breeder's dogs and see if they're the sort of dogs you're hoping for in a family pet.