So assembly is actually quite easy. 3 minutes is a bit over optimistic, it took me about 10 minutes to assemble all the poles and get the fabric over the frame. I recommend laying the frame on its side as it makes it much easier to get the zippers closed. Mine was a very tight fit and I had to do a bit of stretching to ensure the zippers did not rip at the seams when closing it up. Once zipped up mostly, getting the entry door fully zipped can be a bit of effort when in the sauna. Perhaps the fabric will stretch a bit over time, but initially it is a VERY tight fit.The provided chair is handy, but not very comfortable. A pad for the seat is a good idea as it will make long term sitting much more comfortable. And the back is low so if you want to ease back and rest your head, you will need a different chair. It's nice that one is included, but it's not ideal for long term comfort.The steamer works really well. It heats up the water quickly and the sauna starts to come up to a very comfortable temperature in about 5-10 minutes. The display is a simple 3 number display, the first 2 numbers represent the timer in minutes, and the 3rd number is the temperature setting from 1-9. There is nothing in the manual describing the temperature ratings of each setting, so it will be trial and error to find the right setting for you.They call this portable, and it can be moved around pretty easy since assembly is pretty quick, but without a carry bag you would have to arrange to tote it around somehow. I'm also a little dubious of how well the zipper would hold up if it was constantly being assembled and disassembled. I'd set it up and leave it.It does keep the steam in the sauna and the temperature remains constant. While it looks small, its actually pretty comfortable, and the experience of using it was quite relaxing. The chair got uncomfortable after about 10 minutes so I'll need to find a pad, but otherwise is works as advertised.