I had PKD too and was treated at Mayo Clinic in Minnesota. I had my "bad" kidneys removed and my new living donor kidney transplanted at the same time. For housing my husband and I stayed at the Gift of Life Transplant House which is a very minimal charge for patients undergoing transplants. There are shuttles that take you to the Clinic, bloodwork etc.
I think you are smart to consult with more than just one place. Are your kidney labs pretty stable? Do you know when you'll need a transplant? Please feel free to share any details you are comfortable with. Our online community is filled with helpful people. You may want to learn more in the Transplant section of Connect.