I'm trying to refinance one of my rentals as well. I tried Integrity Credit Corporation without much success. They denied me because of my student loans (even though I have 2 rental properties with the same student loans) and then offered me a real estate investment package but the interest rate was 5% (my current rate is 3.99). But maybe you'll have better luck with them.
@Oleksandr Ivanovskiy find and call all local banks/lenders within a 30 mile radius of the rental. Quicken is OK for homeowners, but rarely a good option for investors.