We had one, he shuffled off the mortal coil a few years ago but he was a lovely dog.
Laziest creature I've ever met, had to be dragged on a walk every day. If he had enough that was it, he'd just lie down.
Smart but stubborn. He was not easy to train because he'd only do things when he felt like it. He'd often look at me like I just dribbled on my shirt when I asked him to sit or lie down.
We socialised him LOADS as a puppy so he was ok with other dogs, but he said hello to them like they were another species. Not playful at all just a sort of aloof patience. He'd just sort of politely watch them bouncing around until they went away.
He tolerated the attentions of people outside his family but was very sweet natured with his "pack", quite cuddly and affectionate.
He was wonderful with my DD when she was little, absolutely angelic with her even when she was crawling all over him. Very protective of her too.
Required professional grooming regularly!
Overall I wouldn't get one again, I'm much more a fan of big, lanky, lumbering dogs, but he was a Very Good Boy and I loved him dearly.