Okay this is a strange question....

DH and I are in the process of buying a home. We have a crappy queen mattress that we will not be moving with and I would love a king bed but the apartment we are planning on purchasing has a small staircase and no elevator. I was thinking of getting two twin mattresses and making it into a "King"

DH's parents do this in our room in their PA home. We sleep on it and its totally fine. They have a foam bridge and king sheets so the mattresses do not split apart.

I'm wondering is this crazy and any other bees sleeping on two twin mattresses pushed together?