I am assuming that you are going for vouchers not any other form of subsidy (debt or insurance)

And so I e-mailed the Housing Authority and explained the situation and they sent her a nice letter telling her if she caused issues she could lose her voucher and be evicted. 

Sorry in advance for the long post but it is worth the read.A tenant of ours left the end of February because she was approved for a Section 8 voucher.

The tenant could still choose to stay but would lose her Section 8 voucher.  

A family which receives a housing voucher can select a unit with a rent that is below or above the payment standard.

It does have a lower barrier to entry and it does have nice cash flow.Two things to point out, though:First, people with a section 8 voucher are often looking for a step nicer than what I consider truly low income high crime areas, since their rent is subsidized and they can afford a better neighborhood.

What we do, is we tell all our tenants, after each year, we're committed to improving our properties and their quality of life, so we give them a $200 voucher for repair/improvements with us, and ask them what they want added or done, maybe a new toilet, or a room painted, stuff like that... so they tell you what they want, and it is all tax deductible!  

The payment standards can be found via google for "section 8 payment standards santa clara county"Here is the link for you:http://www.hacsc.org/section-8-housing-programs/housing-choice-voucher-current-participants/voucher-payment-standard-fmr-utility-allowance/

I have a brother with a housing voucher and he's currently living in Hartford. 

I am a big proponent of Sec 8, and lot of times they pay a little more over market rates (perhaps something you might want to consider) Thee are threads on this debating pros and cons of Sec 8 voucher housing.