Section 8 Investors!

[Jacob Lileev]

I am in the middle of negotiating a deal with a seller who owns a Sec8 Rental property near Pittsburgh, PA (New Kensington 15068).
The tenant has been there for a few years and kept the house well-maintained.

The rent is $900
6 BD 2 BA 1,555 SQFT
COMPS: ARV - $135,000 | AS-IS $90,000
I'm looking to get a better understanding of what Sec8 investors would pay for such property, trying to lock in the best deal possible for these investors.
Also, what are the most important things I should look for in these deals?
Any comment would be much appreciated