My cutting table is built to sit over the daybed (that pulls out to a standard sized bed). The top can be removed and leaned against the wall if the bed is needed, though so far the only one that has used it is my DD and she just pulled it out and slept with her feet under the cutting table.
I tried several measures before deciding that 36.5" was the perfect height for me. I'm 5' 5" and usually work wearing slippers.