A couple checked in for their anniversary and I offered them the room with the view, and they took it. It worked, the words came out smooth, but the whole time a little voice said I was working an angle on them. I can do this now, I just still feel like a salesman wearing a host's smile.
More people experience this than they realize.
You can upsell, but doing it without feeling like a salesperson still nags at you.
If this sounds familiar, the Library can help you find the bigger picture.