I've used University Animal Hospital for boarding my ferret, and they've been absolutely amazing every time.
They cat kennels are immaculately maintained and spacious, the staff deal well with animals of all varieties, and you get a nice summary at pickup of your pet's behavior (including important stuff like eating habits) while you were gone. If you have a cat, they have a variety of options including kennels with a window view (perfect for bird watching) and multiple-cat kennels. Birds, ferrets, guinea pigs... If it's feathered or furry, they've boarded it and had happy customers, many of whom I've met when picking up or dropping off my own animal.
Their boarding prices are reasonable and not at all out of line with other places I called, unlike the complaints some Yelpers have about their veterinary pricing.