When taking all the elements out of the box, do check that you have all the materials listed before you proceed. I laid it all out on the floor to check only to find I was missing 4 critical M8 bolts and was therefore unable to proceed past step 2. Without having a phone number to call is annoying, though Tommy Swiss do respond via email very quickly. In a matter of days, I had the missing bolts.
The instructions are pretty straight forward, so I found it relatively simple to put together myself, however it is handy if you have assistance. Take note: the hydraulic arms required to lift and close the bed, require the weight of the mattress on the frame in order to operate. I thought I had faulty parts till I realised you can't move them by hand. Once the frame was complete, the mattress dropped on top, the gas lift did its job, happy days.
Re: quality, I did find a horizontal crease right through the middle of the bedhead. I'm hoping that this is just a case of the fabric needing to settle. Otherwise, great quality, plenty of storage under (we got the king size), exceptional product. Highly recommend.