Guest bedrooms?

We’ve been kicking around the idea of making this room into a guest bedroom for a while now, but we’re having a hard time committing to the idea.

In the past three years, we’ve only had guests stay over twice! It seems so nice, though, to be able to invite people to visit and not force them to sleep on the sofa or on an air mattress. Maybe we don’t have guests because we don’t have a place to put them! (Or maybe it’s just that nobody likes us.) I do know that I would be far more likely to invite friends and family to visit knowing that there’s a whole room awaiting them.

Questions:
→ Do you have a guest bedroom?
→ How much use does it get?
→ What size bed do you have in your guest bedroom?