The in-place plumbing will overkill, so if over time you lock and shut down a couple bathrooms (so you have less to maintain), whatever. 

Agree with the others that tenants are responsible for maintaining the lawn and landscaping.

If you prefer to maintain liquidity and have the potential to handle multiple projects, HML might be the way to go. 

Not UBIT on leveraged real estateRoth and Traditional built into the same planCheaper and generally easier to maintain than IRA LLC especially with checkbook control Hope this helps.  

However, installation costs and procedures may vary, so it's worth getting quotes from both if you're not doing the work yourself.As a hard money lender specializing in fix and flip deals, I've seen successful investors use a mix of these sources to optimize their budgets while maintaining quality.

I still underestimate how much it will cost to maintain my properties.

I purchased a well-maintained single-family home in a growing suburban community.

Maintain a fortress balance sheet; therefore your strength as a guarantor and keep most if not all of the equity in your deals. 

Can I hire a property management company to run my airbnb or can I at least hire a company for cleaning and maintaining?

They move out ASAP and they are responsible to maintain utilities and keep paying rent until you find a new tenant.