we'll be going "camping" in a cottage in norway this summer. our 6 mo baby will be in a travelcot, but we need a sleeping arrangment for our 2.5yo. he's too big for a travelcot (he thinks they're for babies, and would climb out of it). i've seen these all-in-one mattresses (hi tech) on ebay. does anyone have experience with this? or can you recommend anything else??