In general you can get a good idea of rental prices by searching craigslist.
My observation is that rents are declining right now and not much “cash flows”.
There’s a lot of distress in the UTC area – 25 trustee sales of condos scheduled in 92122 between now and the end of March. (searched on 92122 and whether it had a unit/apt number to eliminate the south UC single family houses.)
If you can get a screamin’ deal, it could be good -but don’t plan on prices increasing or rents increasing.