Yes Great Danes do make for good family pets.
The Great Dane dog breed is a wonderful dog breed and is pretty great around children as long as you teach the children how to behave around the dog such as no teasing the dog etc.
The Great Dane dog is considered to be a gentle giant and they do eat a lot of food so you need to have the money to buy enough dog food to feed the Great Dane dog.
I had a Great Dane as a kid and we had to give him up because my dad lost his job suddenly and couldn't afford to feed him anymore.
But a family on a farm took him and I was able to still see him and play with him.
I miss that Great Dane dog and wish I could afford to have another one but they also take up a lot of space and I don't have the space for one.