We took delivery of ours in Des Moines last year, and lived aboard for 4 months with our Golden Retriever Jake. Room for a sofa would be a nice addition, but we really had enough room. We removed the pad and chair from the cave and used the cave for storage with several clear boxes. The bimini with side curtains made the cockpit another room. We had a couple of impromptu happy hour gatherings with several people aboard. We did find that watching TV was awkward for us, missed my recliner. We watched a movie or two from the berth. But the reception for regular TV was lousy, so we quit turning it on after a day or so. I did read about 25 books last summer while aboard, mostly on my Kindle app for the iPad. Did not miss TV at all, it is really just an addiction our family can do without. Space is at a premium, but we felt we had enough for our comforts. I am sure we probably have more living space than a similarly sized sail boat. We did let Jake sleep in the cockpit after a few nights, one he preferred it, and it gave us walking room to the head at night as his space was on his pad in the passageway. He refused to sleep in the cave, besides we had it full of boxes.
We have two laptops that mostly live on the dinette. An air card from Verizon with a router makes the boat a floating hot spot. In order to keep our billboards rented, we need to stay connected to our clients. This works for us. We just have to remember to turn the router off when we get near Canada.
I spent twenty five years or so hauling heavy loads with a 33 foot trailer and a one ton truck. We were farming, building billboards and constructing houses. My bulldozer and backhoe weighed much more than Willie's Tug. Even so, I do not have a desire to haul a boat any larger than the 27. Many folks do this and consider it fun, and do it safely. Just my personal preference not to do it anymore. If we move to a larger boat, it will probably be one more near the size of our motor home. But that is not in our near future. To back up my opinion that there is enough room on the 27 for Willie, Jake and I to live comfortably, it is our plan to return to the San Juan Islands again this summer for over 4 months aboard.
You can check our blogs out,
http://walldogsjourneys.blogspot.com/ and
http://andwilliesaid.blogspot.com/ for an insight into how much we enjoy our time aboard Willie's Tug.