Guests happen -- and sometimes guest rooms don’t. When hosting short-term visitors an air mattress can be an ideal solution: convenient, easy to inflate and deflate, and stowing in a closet when not in use. A real improvement in recent years is that many models now come in double-height options, making the agony of getting up off a too-low mattress a thing of the past. One thing to note: almost all the air mattresses reviewed recommend inflating the mattress a few days before its initial use to allow the material to stretch to its full capacity. If you neglect this step the mattress may appear to leak air when, in fact, it has expanded and just needs to be topped off to be perfectly firm. These top-rated mattresses will help ensure anyone from your old college buddies to your visiting in-laws gets a good night’s rest.