Just bumped up to King-size and I was hesitant to invest much to start with. This was simple to set up on top of the king frame. A couple days in, the top fully fluffed (shrinkwrapped memory foam is a bit anmesiatic.)
NO wierd smell.
No rocket science assembly - just patience.
Since this just went into use a couple weeks ago, I have yet to see how well the sides will hold up. We plan on shifting the coils at least every 6 months to see how that extends the life. We had our old, hand made, queen for 10 years. I'll be happy to get 5yrs out of this and I'll bet it'll make it easily. Ahhhhh. Space! the puppies love it! LOL.
Definitely read the reviews. I was a little put off by the comment "good for guest room" but knowing my personal use level, I figured it would be ok for a start and if it sucked - it really didn't cost too much and could be used as a layer - worst case scenario. So, good starter set for a budget. As comfortable as a hotel king, you bet!