I also received a letter from the county saying that my property is in violation of several health and safety codes. 

The conditions on the ground going into the project may not be the same as when you complete!

@Nicholas Nakamurain order to be successful, you will need to build a network on the ground in Ohio with people you know and trust. buying a random property on the MLS in unknown condition based on other people looking at it, and putting it under management with people you have never met, will not work, and you will lose money.https://www.biggerpockets.com/forums/963/topics/1195280-expe...https://www.biggerpockets.com/forums/48/topics/1137397-balti...so - what's your plan? 

@Sofia De Santos Tavarez if you haven't already, have the property professionally inspected.This should catch MOST of the structural, health & code issues - but not all.

you can always call or email the tenant in regards to this matter. i personally smoke as well and just would want my tenants happy and not feeling accused as its a big problem with a lot of tenant v landlord situations around the country. you can always say you got a report of the odor of weed and was just verifying the smell with both tenants on the property. you can restate your conditions with smoking. you can always ask if they are legally able to do so as well (meaning medical card). depending on how you want to handle it, if you want to make it a legal warning to the tenant as well, you should write a written letter sent by mail stating you got a report of weed and this is a written warning in case this a problem down the road, you have evidence to show the court if it gets to that matter that this is not your first occurrence. best of luck!

Have you had success working with tenants with credit issues under similar conditions?

It allows landlords to offer tenants a financial perk that can improve their credit health.

@Ryan Duphorn  a  5 /2  and 1920 square feet IMHO isn't a good health care traveler accommodation unless you are in a area with a shortage of housing. 

You can make minor adjustments based on the type of appliances (dishwasher, clothes washer and dryer, air conditioning, etc.) and the size of the rental.

As others advised, get a structural engineer in there to review the conditions.