I read body language and although they are very charismatic.... they failed my test!

It is advisable to do your due diligence and ask about such things as how long have they been in business, are alternative assets their sole focus, are they BBB accredited and rated, are they a regulated financial institution, have they ever been sanctioned by any regulatory bodies, how many accounts and how much in assets do they administer?

No body can eventually force you to buy something you dont want.

They explain how they have been having water issues in the basement and no body wants to fix it.

At minimum it will become an added storage area for him and worst case the garage will turn into a body shop where he is repairing his bike and his buddies bikes.If he didn't rent the apartment under the pre-tense of being able to use the garage I wouldn't let him. 

Once you form a impression of someone it you may be able to keep from reflecting it in your dialogue, but if often through in body language or tone.If you should end up in court for an eviction, the judge will likely be very sympathetic toward a handicapped owner who suddenly lost the property and has now become a tenant. 

I've found this to be a much better way of handling the situation than just saying no.Let me add that I had the following exchange with a tenant: I provide a lot of safety lighting at my units, but I had a single female ask me for additional lighting on her place.

I have found that it is very important to be able to read peoples body language when you are speaking to them face to face.

I also found out 2 weeks ago from another tenant that she is subletting some space to another adult female (not sure what space since it's a 1/1 with her and 2 kids in there already).

These wrap around things are popular but they are not tried and tested in the body of law and stand to fail pretty often.