We purchased this shelter a month ago for the purpose of storing hay for our horses.  I assembled this with my wife, daughter, son, and daughter-in-law.  We assembled the frame in an hour and put the cover on the next day (installed by wife, daughter, and daughter's gf while I was moving hay).  We found assembly to be very easy and the drawings made the assembly a breeze. 

One month and the shelter is working great.  We've had more rain than normal for this time of year.  To help vent the shelter, we have not attached lower side flaps and are rolling up the canvas to allow additional ventilation. In order to aid ventilation I am considering replacing the non-zippered end flap with a zippered end flap.  This would also allow a pull-through of the hay trailer.

I recommend this to anyone considering the purchase of this shelter and if anything happens to the shelter I would consider buying it again.