While I'm not necessarily against large dogs being in an apartment, I'm a worry wart and I always think about the future too. What happens if the next apartment/dwelling won't allow such a large dog? Some places have size and weight limits on animals. Something to consider before going for the biggest dog out there
I do know a few people who have raised Danes successfully in a 1 bedroom, downtown apartment
It can be done as long as you're realistic about what it all entails