Sadly, Dobes are still on the lists of "aggressive" breeds, even though they are very loyal, social, and wonderful dogs. I owns pitties and everyone loves my girls because they were properly socialized and are well behaved. Even so, it is terribly hard to find an apartment. The one I'm in asks no questions and has no restrictions, but there is a $400.00/pet deposit. Small price to pay to keep my girls. Talk to your landlord and find out if they restrict only pitties, or if they restrict other breeds as well. Also, If there is a BSL in your area, you need to know what breeds it's targeting, otherwise your landlord won't be your only problem.
An acquaintance of mine owned a Dobe (she wasn't a good owner) and that dog was amazing! She was such a wonderful girl. I can only imagine what she would've been like in the correct hands...
Pit Bull Mom and Pit Bull Rescue