As has been said, cuddliness is a personality trait.
The first Newf we had, Molly, was ALWAYS aloof, and at over 10, she still is. She likes affection, but only when she wants it! The other three are much more cuddly, and often demand a fuss, even when we don't want to give them one!
If you want a dog on the settee or bed then I wouldn't go for a Newf... Unless you want to sleep or sit on the floor! They take uo alot of room!!!
Another thing I will say is, mine are not happy in our livingroom as they get too warm. Our dinning room has floor tiles and no heating, so they are in there or on our patio most of the time. If they wanted to be in the livingroom with us, they would want the patio doors open, which would mean that I would freeze to death!!
I also have 2 English Cocker Spaniels, they are both cuddly, although one is more cuddly than the other. Now they are the size of dog you can cope with on the settee or bed!