I love this mattress! I was a little scared when I first opened it because of the firmness. Especially since for the last 10 years I’ve been sleeping on a traditional mattress with a pillow top. This is a hybrid mattress with coils and foam, so it was very different than what I’m used to. I sleep in every position (back, stomach and sides) and don’t have any issues. My partner wakes up early for work and I used to wake up when he did from all of the movement but now I can’t feel him getting up! I also love the dark grey color. 
It smelled a little when I first opened it but nothing too overwhelming and the smell was completely gone after 24 hours.