This is essentially the same model as the previous leather couch. I only slightly modified it to make it a short, single couch.
This was short and easy to make, especially because i planned the original accordingly so that i could do this if i wanted to. All i had to do was shorten the base and lower cushions, delete the right back cushion and the cylinder cushions, and pull the legs and armrests closer.
It works with exactly the same textures as well. I only had to slightly modify the lower cushion texture to resize the buttons.
I was able to make this model from the longer couch model in under an hour, shows how much work you can save yourself if you plan things ahead! :D