If the above two make you feel comfortable to continue working with the agent, then drop the price and move on (assuming the numbers make sense). 

Simply scroll to the bottom and you can actually interact with clients like @Bill B. who have direct experience working with that QI.If you have a comfort level working with someone local that is perfectly fine. 

We always do this over coffee or a casual setting where everyone feels comfortable.

Stretch your boundaries and your comfort zone, don't jump them.Lastly, if you would not want to live in the area, or building, as a renter, then don't buy the building, nor in the area.

If they fail to leave, evict based on the habitual lease violations.If you can't figure out how to do this, or don't feel comfortable doing it, then the other option is to allow them to finish their lease and then require them to move out when it ends.

I've noticed investors finding some promising opportunities there despite the current rates, partly because of strong rental demand and growth potential.At the end of the day, it's about aligning with your long-term goals and comfort level.

There are items required by law and in general those are related to the safety and basic comfort of living. 

We're comfortable with that though as we want assurances that their financials are healthy.

I always go in with a simple offer of this is the rent, and we are also comfortable giving you a (insert something you need to do anyways like a basic, white paint job or a new appliance).This is one of the most uncomfortable parts of the business though, and the quicker you get over being able to have these conversations, the quicker you will be successful in this business.

You've already put in some great thought, and with that ADU, you've got a lot of options.One thing to consider is starting with long-term tenants in the ADU for a bit and then transitioning it to a mid-term rental (MTR) down the line when you feel more comfortable.