My dd had a cot that turned into a junior bed, which was good.

We just bought a bed and I looked for about a month wanting to find something with storage underneath then I found a place called just kids furniture that just opened in our area, they are great!!!! They custom make everything so we ended up with a double bed with storage drawers. They paint the bed any colour you like in non toxic paint and make any changes you like. Not sure what area you are from but if you find a place that custom makes like bev marks you are set although it may cost a little more.