Marian, There are people that need this type of property but they may be hard to find without a lot of marketing. Where do you have your home advertised? Are you advertising in the local paper? Online?
Do you know what this property would rent for in today's market? What would the house rent for and what would the inlaw suite rent for? This may be best suited for an investor that could have two rental units on one property. Can you give me more details about it?
I understand you don't want to use a realtor and I respect that. I just need more info before I can really give you a good answer.