The more I think about it, the more I question the whole 'broke into the room and abducted her' theory.
In a country where abductions are rare, an abductor would have had to know she was in the room, knowing there was no baby listening service, and knowing the parents would check every half hour. So the abductor would have to loiter until after a parental check before striking.
And there are no signs of forceful entry.
Too implausible.
However, did the room/appartment not back onto a road, and the resort was not enclosed.
What if she woke up, went looking for her parents (somebody already said the locks on the doors were easy to open from the inside), but instead wandered onto the road where a passing vehicle (with an opportunistic b*stard inside) took her.
Acually, typing that, it seems implausible too.
Oh heck, Madeleine where are you?
Those poor parents, they must be out of their minds and beyond...