Very easy to adapt to, firm but cozy. I sink in, but not too far. I was concerned about feeling hot, but it has never been a problem. It seems odd to buy without ever lying on a mattress, but I just decided to take a chance and return it if I didn't like it. After two months, it's not going anywhere!
When I took the bed out of the box I was skeptical. I slept on it one night and woke up numerous times. In the morning I said “the mattress isn’t all that great!” However, by the end of the next week or so, my body had adjusted to the mattress. I slept so soundly that I was sure I was sick. After night after night of incredibly restful sleep, I realized that it was the mattress. We have had the mattress for about two months now and I have been having the best nights of sleep in my life. I should also note that I share the bed with a restless puppy! I am very happy with the ghost bed.