Dishwasher may not be a requirement but it certainly makes things easier for your guests and especially your cleaners.

There is no cleaner alignment between GP and LP than with a fixed % of profits. 

and there's cleaning, carpet, painting, patching.

Never had an issue in 5 years of this when tenants have moved out I just send my house cleaner in for a deep clean NO turn over costs other than that.

. - We also have S8 tenants move because the owner won't agree to repaint, replace carpeting, etc. - that were new when the S8 tenant moved in 1-2 years ago.Another challenge of finding S8 tenants is many EXPECT you to waive application fees and security deposits. 

Have plenty of cleaner connections and other helpful STR connections to share if wanted.

If that doesn't work you'll want carpet or concrete apoxy (like a garage).

I’d throw in its cleaner energy, but if that was really a factor we’d be building nuclear plants. 

In each market I operate in I have someone available for showings this person is usually my runner who is responsible for quality control and restocking inventory but I've also used a cleaner for this.

Critical features for me: calendar mgt, manage client communication, communicating with team (i.e. cleaners), supply/operations checklist per property, and vacancy reporting.