All Picantos have five doors, so getting into the back is as easy as you'd imagine. True, the door openings aren’t especially wide, but that's the case in the vast majority of city cars.
While a couple of six-footers will have few complaints about head room when they get inside, they will find their knees pressed up against the front seatbacks, especially if anyone tall is sitting in front. It’s okay by class standards, but a Hyundai i10 is bigger, while a Suzuki Ignis is vast by comparison.
Sitting three adults in the back of the Picanto is a serious squeeze, but at least it is legal; the Up and versions of the Ignis, for example, have only two rear seatbelts. All Picantos have two Isofix child seat fixings in the back.
While each rear door has an armrest, unfortunately neither has a proper door pocket.