It all depends on  your specific state  and what you are seeking to accomplish  after you've done your due diligence and homework .

But with the kid...and not a child or even a toddler but a two-month-old...I feel bad...Should I give them a couple weeks to figure something out?

I just know if I had a family I would want the kids to have their own bathroom, but is this passable?

I'm not going to do your homework for you.

I have worked in the paint industry for about 15 years, and have done a little homework on the subject.  

I received a letter from a crush one time as a kid and it was soaked in his dad's pine tree smelling cologne.

If you do your homework on this, condos/townhomes can be a terrific investment.

Or you could just increase the security deposit, so rather than speculating that the pets will do more damage than, say, children (and for whom you can't charge extra kid rent, for better or worse), the tenants are only pet penalized if their individual pets actually cause actual damage. 

This works well for my small units that are often rented by kids right out of high school.

I like to keep a ceiling fan in the master bedroom, where I presume adults will reside and have enough sense not to break :) In the other bedrooms where I presume kids or teenagers will reside, I prefer to go with a ceiling light fixture (even my own kids have broken the chain on the fan).