I have a 3 year old (September’18 baby)

And a 2 year old and I was thinking of getting them bunk beds with my 3 year old on the top bunk. I’ll post a picture, it looks very safe and I do believe my 3 year old can handle it HOWEVER, she sleep walks sometimes and I don’t want her to somehow fall or something when she sleep walks. I don’t know how sleepwalking works tbh so idk where their head is at while sleep walking. This is what the bunk beds look like.. it’s only 50” off the ground as well so it’s pretty short. I’m super on the fense about this. Does anyone else have a young sleep walker or any experiences with this?!