There are laws, specifically anti-laundering laws you need to pay attention to.

I can let you know if it's ever been inspected and what to look out for.MA real estate laws say that you can't rent to a family with kids under 7 unless you have a lead certificate on file with the state and the anti-discrimination laws say you can't not rent to a family because they have a kid under 7 (even if it's because you know there's lead paint), so they basically made it so that any rental with more then 1 bedroom has to be deleaded.

Unless you are rich, famous or both.I have LLCs for my commercial assets and an s-corp for my mgt co so I am not anti-entity.I weigh the .001% chance of the 'slip and fall lawsuit' against the 100% chance of not being able to get long-term fixed rate residential financing.  

Odd because they had prior articles related to the upcoming vote and now nothing after....Here is the mobile article: http://m.startribune.com/minneapolis-city-council-approves-section-8-anti-discrimination-ordinance/417038684/?

Overall, I am not anti-GURU but cautious.

It is most likely the fastest and cheapest ways of getting her out.Finally, be sure that you understand MA anti-discrimination laws.  

From experience I'm not convinced on the air purge method.Instead I use a 3/4 HP submersible pump in a 5 gallon bucket & pump fluid (usually the pink 'food grade' RV anti-freeze) through the lines.

Income source is a protected class, it is listed on the site you linked.State and local laws often extend anti-discrimination protections to other categories, such as age, marital status, sexual orientation, or source of income.

I grew up in a family who's anti-debt and try to avoid debt as much as possible.  

In CA  STRs are at risk of having anti STR regulations imposed.