I don't know anything about them but I would be hesitant to use them.

When you're going out of town the last thing you want to do
is advertise to anyone that you're going out of town, especially
on a web site that the world can look at.  

Another caution: I turned down alot of these places that
provide care for cats because they have problems giving
cats their medication.   Last year my oldest male was
on medication that he had to take twice a day.   A number
of places wanted "clearance" from the vet for him to
not get his medication while in their care.  

For me that was not an option, he had to have his medication
and for me I'd cancel the trip before I would stop his
medication.  

A suggestion: ask your vet for suggestions as to who to get
to watch your cat.  

The woman I get visits the house and worked for my vet for
many years.