As this is my hometown but I now live London, Durban’s sole Gay B&B appears to have closed. Their website is no longer online.
i am not aware of any other options, but most places are pretty accepting/open minded and just plain won’t care as long as you have paid your money.
I personally only stay at 1 of 2 places in Durban when I am home, these being The Royal Hotel OR Bellair Suites.
I will say Protea Hotel Edward is also a very good hotel, but I personally don’t like the exact location.