i have never nor could i ever leave my girls at a kennel..perhaps there are a few "good ones" out there but ive yet to see one thats even near half decent enough for my dogs..ive been away for 4 weeks at a time when i got married. i had a friend come and house sit so they had the familiar surroundings and routine of home.
even so i missed them way too much and doubt i could ever leave them for longer than 2 weeks again..
recently i went to bali for 7 days and i fly my mum over from sydney to puppysit... there are better options than locking them up in a cage all day for six weeks IMO
have a great holiday