Anyone currently using functional Loft beds/ bunk beds?

I been searching for different functional loft beds I was hoping to find beds which can be placed separately. I need a top bed which would allow other furniture to be place underneath. The few I have seen online look cute but I cannot find the actual download link and leads to a munch of pop ups and ads. I found the MTS download and I am about to try it out. I was just wondering if anyone knows of any other?