I will depart from Schiphol on Sunday at 10:00, and return on Nov 17th at 17:00. What options do I have to travel to/from Schiphol Airport?

* I'd prefer the train, but if I am not mistaken, the first connection from Heerlen will arrive on 09:56, so this is no option.
* I could take the car, parking for two weeks is 100€. But I will have to drive back after a night in the plane, possibly without sleep. So, no option either, I guess.
* Third option is to try to get a hotel room. Best rates I found are 150€ per night. Any tips on that?
* The last night train arrives 04:00. Since I will travel with my sleeping bag could I just take a nap somewhere near/at the airport?