After researching for quite awhile I finally ordered this futon based on the reviews previously posted and I am not disappointed.  It arrived on time and it took me about 3 1/2 hours to assemble by myself (and by the way I'm a 60+ year old female).  The directions could have been a tad more detailed, but with the written directions and using the pictures for details not written, it wasn't difficult at all.  The mattress is even better than I imagined and although on the firm side, it is very comfortable.  It's also easy to change from bed to sitting positions.  I found it to be very good quality and "rich" looking.  The only thing I can not comment on is sustainability as I've only had it a short time but I don't expect any issues based on the quality of the materials.