I actually once was in a lecture where they discussed this as one of those jobs that can be seen from two very differnt perspectives.
1. very little work, a lot of free time, nobody watching you work, freedom if you do what you are supposed to do
2. huge responsibility, a lot of multitasking - keeping things going, fixing things, checking things, working with limited resources.
If you have nothing else going, and you want a little time and don't get lonely, I'd do it. I think it gives you a lot of time for reading/studying/excersize, on top of that you can spin this well for afuture career - the responsiblity, having to improvise, no close suporvision