Rhumbline, the forepeak berths are pretty basic. There is no access from the forward cabins, nor are there any portholes. The only opening hatch is the deck hatch.

Having said that, there's plenty of space for a teenager and there is a fan in there as well ... I think. Call Didi or your broker to confirm. Teenagers can sleep anywhere. When I flew to Toronto in July, I saw a teenager sound asleep while standing up and leaning against a wall in the departures lounge! <img src="http://www.traveltalkonline.com/forums/images/graemlins/Grin.gif" alt="" />

Anyway, if it gets too hot in there, he/she can always move to the cockpit, the trampoline or the fly bridge. There are plenty of other places to crash.