Hi!
I house sit alongside pet-sitting through Rover.com and have had a very good experience with the ease of use of the app, the insurance coverage, and the ratings systems.
When searching for a pet-house sitter combo, try to find someone who is well organized and doesn't make you present the entire schedule. If they aren't asking questions about pet behaviors, food schedules, etc... then they aren't thinking ahead enough that I'd trust them with my pet or home. Someone who could run through what a typical day would look like while they are at your home, and someone with a plan of execution in case something goes wrong. If a sitter does NOT ask about emergency vet information, that's usually a red flag for me.
I have a booklet of checklists that I choose from depending on what the client needs, and we run through it to make sure I have all of the pertinent information, and then we do a quick summery after our interview and fill in any gaps/questions they may have..
I also print a copy of the insurance through Rover to be sure they have a physical copy of it as well. Also, in the very least, Canine/Feline CPR/First Aid and some basic leash training go a LONG way (I have both) in finding someone who has taken steps to ensure the safety of your pets, not someone who is just looking for a free vacation.
Feel free to PM me if you have any questions! I'd love to help. Depending on the dates, I may be able to apply even, but I'm not certain! :)