We are “be outside” people. Outdoor space that is nice without needing to be extravagant would be very important to us. A main reason for buying our current house was the back yard space.
If you space is small, that’s even more reason to finish it and show it as a completed space. If they can SEE how usable the small space is (with space for seating and a firepit and grill perhaps then they won’t have to imagine how they will use that tiny space.