About the safty and clean condition, you can see my experice below.
When we were seeking for a place to live 5 months ago. We even would not considering about Duke manor due to the bad review. I find someone sublet her apartment in 3011 Pratt street, I search the address in goole map and find it is a great place for us who study in Duke university. So we went to check the apartment and find it is Duke manor. This changed my mind about it, it is very convineice to school it you choose the building near Douglas Street and the place is kept very clean by the woman who is a nurse and has live there for nearly two yeas by herself. She move out because she had buy a new house.
So about that someone says it is dirty, I have to say it depends on who live there, the outside is the same as other place. And about the safty, I think no place is safe to walk in at night near Duke university, and in the day time,everywhere is the same. We have no car and we will use Saferide of Duke to back home at night, which is totally free. At first the AC didn't work well, they change it to a brand new one after fixed it and found it is too old too be used. The office people are nice except one girl.
We have a very happy time here with low price. Of course if you need a luxary place it is not the right one.But compare to campus walk and poplar west I would recommend Duke manor near Douglas street.