So far so good! The lumbar support definitely seems like it would be great for back sleepers, maybe not quite as great for side-only sleepers (we’re putting a topper on it so it might not be that big of a deal).
Bought it specifically for when my brother and sister in law come visit. Neither of them are very big so I’m confident the bed will hold up. We don’t need it for a few months, but I’ve already filled it up and laid the thick topper on it and it still seems to be holding air great