We take our pet parenting responsibilities very seriously!!
We have two cat children and we hate the idea of putting them in different surroundings while we are away, so any sort of boarding is out! Instead, we have someone come and live in our house while we are away. We go to people we know who have human children aged 16-25 and ask if their kids would like to live in a luxurious well-equipped apartment close to the heart of the city and get paid to boot! The human kids love the idea of being away from their parents/roommate for a while and getting paid, and the parents like the idea of the kids learning responsibility. Nobody gets rich on the $20 per night we pay, but it's an easy job and a win-win all around. Even after one week, the kid gets a nice slice of pocket money, and we get to put our minds at ease. We do carefully interview the kids to make sure that they are cat lovers, and we have a three-page "training document" that we walk the selected kid through. We must be doing okay, because after a couple of days, our girls (who are great judges of character) love to sleep and cuddle with the babysitter.
Bottom line: our cats are happier when they are at home in their own surroundings, and we are happier too!