Are there other RV parks in the area and is everyone crammed in like sardines? 

Not a day goes by I dont wonder if I'd prefer half the net income for friendly nice tenants that pay on time, and dont rip the oven door like a tin of sardines...

You're got five people living like sardines in a small house in a high humidity part of the country.Gail

The smallest building is 340 with its kitchen, bathroom, living area, and entrance but it's like sardines in a can.

When a landlord has great occupancy and slightly above market rents it's because they screen properly.They also have good tenants lined up at the door to rent even though rent is slightly higher.The reason is the landlord builds a rep for taking care of their buildings and when a problem arises the landlord fixes it quick.Just like bad tenants you get slumlord landlords out there who don't want to fix anything and pack people in like sardines which is against city code health and fire ordinances.So it all comes down to if you run your properties right and have bought them right to begin with then good tenants will find you.If you have a run down piece of crap you will invite gangs,drugs,no pays,high turnover and everything else under the sun.I believe at their core most tenants want a nice,clean place to live for an affordable rate.

There simply are so many places I'd rather be, with people not stacked one on top of another like sardines :) 

* "Is it even worth it suffer in a room packed like a sardine in order to invest?"

I don't think people actually want to live like sardines.

Also people looking for places in your aren't looking for sardine cans.  

You may encounter additional zoning restrictions around rooming houses.The second issue will be the fact you are dealing with students, not enlistees in barracks or sardines in a can.