I have been sleeping on this bed (single frame, sprung slats) paired with my own memory foam mattress for a two weeks now, and I am very pleased with it. It was relatively simple to assemble with one other person holding things in place as I tightened bolts etc, and everything appears to be well made and robust.
The only problem I had was when it came to attaching the sprung slat module to the frame itself. The holes didn't line up with those on the frame! Fortunately a replacement was delivered the next day and that one was correctly drilled, so it all fitted together well.
I'm impressed that there is no creaking, and even though the frame feels nice and sturdy (I'm not exactly feather light!), the frame itself is cleverly constructed so it is actually quite light and easy to move when vacuuming.
Lovely matt black finish which is easy to dust, looks good and feels good. Very pleased, and at the price, it was an absolute bargain.