There are niche lenders that can do Residential DSCR underwriting on properties that are 5-10 units but this is relatively uncommon today. 

MHU will proffer only the TOH type of park (less hassles, easier to manage, etc) but there is potentially bigger returns if you are willing to deal with POH rentals.  

Every day they should call their case manager, an inspector and a supervisor to advise them how important is that the unit is approved so they can be authorized to move in.

I would be interested to hear more about the area since I, like @Julianne Kauffman, am relatively close but know little about the city.

Being in CAN I find it easier to self manage and hire a team.

I primarily delt with non- performing 2nds, they prefer performing 1sts, so it's definitely a different animal,  but manageable. 

I will help run the STR, but I told him he needed to get property manager from the onset.

Because if not, now you are reliant on contractors and such, and there is a significant learning curve in this industry just around how to manage them and not get exploited or ripped off.  

I read their cc&r and the only thing I found that relates to rentals is a line that reads “Property shall be used for residential purposes only”But I’ve reached out to the hoa and was told “Our HOA regulations say single family home which means No vrbo or short term rentals.”I’m getting confused since I’m fairly certain that single family home doesn’t mean what they think it means.

But because I'm still relatively new to investment real estate, I was assuming I was missing something obvious that seasoned pros know that I don't.