We had the Itasca Navion which is the same coach. Had plenty of room for us even with a 50lb dog along. We even had unused storage, some of which got used during the trip for "trinkets" the wife would pick up along the way.
Longest trip time wise was 28 days, and close to 4k miles. A couple of bad weather days in there where we had TV and internet coverage, so we didn't get that closed in feeling at all.
Overall we liked it a lot, except in our case it was too big for our style, so we went back to a class B which is plenty big for us.
Biggest turn off in both our Navion and the current class B we have is the Sprinter part. No more Sprinters for us......