I had one of these once long ago, so long ago those files have been shredded. I do remember I called the IRS for guidance - back when you could actually talk to someone.  If my memory is correct, I reported 1099 as Other Income then also entered a negative for same $ amount for expenses. I don't remember what I used a description for the expenses. 

My client was full time student that went to Costa Rica to study monkeys or something like that.