No offense, but I doubt there is any dog that would be quiet. Great Danes are known to be gentle, but Smaller and cuter, the more they would want to assert their dominance and tend to be a little extra yippy. Check up on Small dog Syndrome.
Be it any breed, if you build a relationship. It's worth it. The barking would be for essential times only and the rest your loyal little darling.
My #chihuahua cutie, is the reason, most of the time I can go and do solo stuff in India. As he is extra protective of me and somehow senses negative attitude from people.
Here is he is 7 year old, my burrito! :P