What's the car like? Would it be good enough for travelling around (2 people, usually not a lot of passengers)? Ideally I'd like to be able to sleep in the back with the rear seats folded down

 

The car is good.
It is now rather old and has all the little brittleness coming with old cars.
It's a good car for four occupants. It offers satisfying place also on the second row.
Sleeping in the back will be a challenge. You can fold the passenger front seat flat, you can also flat the rear seats, but the jonction will not be 100% flat or exemped of holes in between. This would require a well designed matress. The trunkspace is not flat.