Old Feb 10, 13, 8:32 pm
  #6  
PHLGovFlyer
 
Join Date: Feb 2005
Location: PHL
Programs: AA EXP, HHonors Diamond, Marriott Lifetime Ti, UA Silver
Posts: 4,651
All of the ES pull-out sofa beds I've encountered have either been full size (~54") or queen size (rarely). So it should be big enough for the mattress. However, it might not be strong enough or provide enough support for a regular mattress.

Have you considered bringing an air mattress and pump? I've done this when traveling with younger children and it works very well.
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