We just spent the last 2 years enjoying our 2017 3350BH. As for issues, we never had any major problems. A few very minor things like the wood grain sticker on one of the bathroom mirrors started peeling, etc. but overall, we really liked it. We did just trade it in for a new 5er though. I will say that our kids/grandkids LOVED the bunkhouse, but never slept on the bunks. The seats in the bunkhouse, when folded out, are about the size of a king sized bed. The only real complaint was that there was no door between the bunkhouse and living room areas (just a curtain).
I'd agree with arch113's suggestion to make sure you can comfortably tow it. Its marketed as 1/2 towable, but after 2 years of dragging it with an F150, I was never happy when pulling. I can't quite make out your truck in the photo, but if you have a 3/4 ton or bigger, you'll be very happy with the combo. I'll kinda miss that rig.