This fifth wheel is made by Heartland, and appears to be one of the larger varieties they make in the Big Country series. From their website it would appear that this is a new floor plan for 2015.
One of the main things we like about it is the living area in the front and the sleeping quarters in the back. I'm not sure if it's just how the rig is divided up, but we like the use of space. The front end of the trailer usually never has a window so having the TV/fireplace area there makes sense. The slide on the left of the picture gives you some extra light with all the windows, and you could still sit in there even with the slide in. I'm not sure about the carpet, but I'm usually never sure of carpet in an RV. Only pseudo-complaint is that it only has one reclining chair and there might be arguments over that - although the cats would love all the room on the couches.
I also liked the bedroom area with it's large king bed and ample storage space. It doesn't look like one would run out of drawers any time soon. It also had some nice MCD shades in there so you could sleep in as long as you want. There is a large closet with a washer/dryer prep so that would be nice as well. Looking back through and comparing what I remember to the floor plan online, I don't think the bedroom would be easily accessible if the kitchen slide was in (if accessible at all). I think an important factor for full-timing or even traveling in an RV is how usable it is in a pinch without the slides out. Not sure this would work so well...
The kitchen was quite nice with a full size fridge, nice layout, and a table with chairs (vs a booth setup). It has all the comforts and conveniences of home including an oven. Not a ton of counter space, but with the covers on the sink it starts to make up for that. I think there was also an area by the table, but I'm not sure if it was useful for kitchen prep.
Like I mentioned this fifth wheel was a beast. It weighed in at almost a dainty 13000lbs with a GVWR of 15500#. This would require a serious truck to tow with. It is billed as a 4-season trailer with R-38 in the floor and roof, R-11 in the walls. Looks like dual pane windows are an option.
Overall a very nice fiver - nice layout, residential feel, and all the amenities one would want. And if it's not included in this specific trailer it's an option. Although the lack of access to the bedroom with slides in would give me pause, with them all out it would feel like quite a home.