One of the main reasons we bought the car. Ours are currently 6 (a bit small for her age) and 3 (about average) and they *love* it. Mom and dad love it too! It’s their own little world back there and the “cubbies” down in the wheel wells are perfect for coats, backpacks, and lunchboxes.
On a trip > 2 hrs, I will usually install their car seats, but otherwise it’s RFS all the way.
One thing I consider a must is some high quality tint. That’s a LOT of glass over their heads and it can get pretty hot in the dead of summer. You don’t need to go dark any more, so if that’s a concern, it shouldn’t be.
Also make judicious use of preheating and precooling. For air conditioning, use the “fresh air” vent and not recirc (which seems a little counterintuitive) and aim the rear seat vents up and they’ll be all set.
Heat hasn’t been an issue- they are usually the first to complain it’s too hot.
We are expecting to get another ~2-3 years of use for the 6 y/o (maybe more) and at least another 5 for the 3 y/o. So nice to be able to easily carry little friends home from school, to the playground, etc.
YMMV, but it’s been a huge hit in our family.