EdOsmar Welcome to the world of HiLo. According to the video HiLo produced for their trailers: https://www.hilotrailerforum.com/f49...-youtube-1233/
Post #3, video 24, the bunk can support up to 350#!!!
Now, I don't think I'd want a whale like that up there above me, so I'd limit it to maybe, 200#. But, the factory installed cushion is quite thin and less than "firm", so if you put anybody other than one or two kids up there, I'd upgrade the cushion.
Spend some time reviewing ALL the videos - they will answer questions you didn't know you had.