The Viszlas I have seen also need a lot of exercise as they are in the hunting/bird/gun dog group. I would not have this as an apartment dog if I didn't have a yard. The ones I have known that lived on a farm were extremely friendly, smart, and always on the move. Even having three legs did not stop one from keeping up with two horses and 300 acres. She was also skinny as a rail from all the running she did daily, and she had access to food 24/7.
The one I have seen someone walking in my old neighborhood looked like a dog I wouldn't want in my apartment. Very wired mentally and just needed a good run or mental outlet. And we know how they occupy themselves when inside.

Ever think of a dachshund or dachshund mix? Short hair, lots of fun, and can be exercised in an apartment. Mine showed up 7 years ago and is the perfect* dog for the apartment, the farm, hiking, kids, adults, other dogs.

*has tendencies to get into the bathroom garbage