Sheets for Sofa Bed

[Matt Bowman]

We are getting a sofa bed for the living room of our STR. The mattress is 60x64. What kind of sheets do you think would work for this? For our other beds (king, queen, twins) I followed advice here and got sheets from Kohls, and those are great.

It seems like the simplest thing to do is just leave a set of queen linens in the closet for guests to use on the sofa bed. One side of the sheet set will be too long but maybe that's no big deal. I thought I would ask here just in case I'm missing something. Thanks!!