I'm pretty sure this was done to death on PPrune a while back, and I'm sure search will find it? What you see in films is not the truth!
The answer is that if the a/c has an autopilot, it could be set-up for an autopilot approach and touchdown. The smaller the a/c is the more the chance of a PPL being able to put it down safely, although the best you can probably say is that it will 'come to rest'
in a place with rescue facilities nearby.
No, it is not THAT difficult, but things do happen rather quickly once you get near and on to the ground, and the chances of a 'newbie' coping without an accident of some sort are slim.
Even with an 'automatic' landing there are things that need to be done, and getting them all covered (and remembered!!) in a radio 'pre-brief' is a daunting task - and that is assuming the 'pilot' can work the radio, and does not 'freeze' in panic on landing.