I beleive there is always a way to improve relationships and often times that involves some give and take.  

Here's a few things you might want to consider:Open Family Discussion: Since there are multiple heirs and not all are on great terms, it’s important to have an open conversation with everyone involved.

All real estate investing (not including some creative strategies) involves acquiring real estate.

- Do you handle evictions and the legal aspects involved?

Or just clean up the loans to get them into a single loan?

Given, I'm a nice person and a clean roommate (LOL) but they don't know that.

The wholetail is a smart play, but you should be cleaning the place thoroughly and doing no repairs and then presenting an honest proforma with rents and expenses estimated so investors have a PDF to look through.

We are concerned that the smoking/smell will turn off prospects as well as the extra cost of cleaning up areas after smokers move out.The building is in Illinois. 

I have worked with several clients in a tax capacity who are involved in informal partnerships.

I can see a full day of labor, between getting supplies gathered, setting the job up and also clean up and disposal.