As long as you're fine knowing that cuddly bundle of puppy fur is going to grow up into a gigantic, slobbery, shedding teddy bear of a dog, Newfs have a lot to recommend them.
While Newfs do need plenty of exercise just like any other dog, they're also calm animals who can live just fine in a small house or even an apartment. In fact, if the choice is between having their own wing of a mansion and being crammed in a one-room apartment with you, your Newf will pick the one-room apartment every time.
Newfs love to swim, and watching a Newfie swimming is like watching water ballet. You'd never guess that clumsy-looking dog could be so graceful. They're also massively strong. There are plenty of sports you and your Newf can participate in together, including water rescue, draft work, and backpacking.
Newfs are so people friendly and so huggable that they're naturals as therapy dogs. Taking your Newf to a retirement home can be the most rewarding experience you and your dog have. Newfs are also great with kids, and while they're not aggressive guardians they are watchful for danger. A Newf who senses trouble will quietly get between the child and the perceived threat.
Bringing a Newf into your family is a big decision, but if you don't mind doggy kisses that require you to dry not just your face afterwards, but your hair and your shirt as well, you and your Newf will be great buddies.