Brings back memories...I was contacted to be a part of a focus group for new RVs way back in 1975. The Blazer Chalet was part of the RVs we were reviewing along with a couple of Class Bs and a VW Camper.
At the time we had a 10ft chassis mounted camper which of course had a lot more room than the chalet.
I always thought they made for a nice looking setup though.
Here's a website with lots of info.
http://www.blazerchalet.com/