Sophie, hi.
I've had a nature's nest for about a month after reading a good review on this site. My daughter was about a month old and I was having real problems with sleeping positions because she prefered to be on her stomach. On her back she would wake herself up a lot and just not settle.
The nature's nest has proved to be a godsend. I still wouldn't say she was the best sleeper in the world, but she's so much more settled than in the moses basket. When she wakes up she seems to rock herself to sleep again. It's really made a difference to me as I was suffering from the lack of sleep and from the worry of when she was on her tummy.
I'm now looking forward to when I can put her in the bouncer too.