My 2009 1191 has to be similar. I have had nothing but great experiences with it too. The tent has been wonderful for my daughter and find it the "missing" piece to a full size truck camper...SPACE! It gives the wife and I, (daughter too) an area that is hers and a place to relax in without being underfoot.
I waterproofed it when we bought it and its been wonderful! I cannot say whether or not it was needed, just did it for piece of mind.
The heater has a duct that come out specifically for that room too. Rain has been no issue, mildew either. I just make sure I open her up when we get back for some sunshine for a few hours. Yes, in bear country, regardless of rules, I wouldn't want my kid to be a Scoobie-snack! So we just use this camper as it was originally intended...One queen atop, and one pull down 6' above dinette, one that's made from the dinette. So, sleeping 4 is easy!
I again will affirm, the tent has been a positive, not a negative.
35 fresh
35 gal gray
35 gal black
Solar, Onan 2500 built-in (LOVE IT), added 1500 watt inverter, added auto transfer switch.
here is a link to my photo bucket pics.
http://s50.photobucket.com/user/tmartin000/slideshow/2009%20Lance%201191