7 nights in Disneyland Paris staying in a club level room with a beautiful view over the lake. Certainly not everyone's cup of tea, especially for 7 nights, and definitely not cheap, but I found it great.
We drove there and parked up the car and didn't get in it again until we went home. No cooking all week, restaurants for evening meals booked in advance so very little thought into where to eat.
Everyday there was little thought into planning the day (appreciated not having to think up and plan day trips), going to the park in the morning and relaxing in the hotel swimming pool in the afternoon. Being there such a long time meant we didn't have to rush about to get all the attractions done.
I just liked having a relaxing week without driving, navigating, no cooking, no cleaning, minimal planning once there, and having kid friendly entertainment right there.
We also did 7 nights at Legoland in Denmark. We stayed in a self catering lodge at Lalandia. I got annual passes to Legoland (worked out cheapest for us) and we went to Legoland most mornings, and swimming in the amazing pool at Lalandia in the afternoons, plus one full day at Lego house. This trip did require driving but very short distances and the roads weren't busy! For the self catering I took a massive case of really easy to prepare food and boxed wine, which we topped up with fresh stuff at the local shop. (Think jar of sauce, meat, frozen veg and rice / noodles / pasta.)
Basically, with primary aged children I like having a holiday where there are activities that the children enjoy and I still get a bit of a break and don't have to do too much thinking, planning and navigating on strange roads with crazy drivers!