Black rock is a lovely place. I live a few suburbs away in Parkdale. I'm not sure of streets but I think as long as you are walking distance from the beach it's pretty much a lovely place. Obviously beach road is the best place for views. It has a lovely group of boutique shops and coffee shops and is close to Southland (Westfield shopping centre). Fairly close to st Kilda and Brighton.
Lots of amazing beach walks and close to half moon bay (amazing fish and chips).
I love Parkdale, where I live, because of the village / beach lifestyle but close to the city. I do yoga in black rock. It's a pleasure to drive along the beach to class.