I've asked them to clean their apartments on multiple visits but I am seeing little to no progress.

As someone who has experimented with multiple tools, I would recommend trying out the tools and your listing platforms first to see which ones you like best then deciding on the workflow

I have called multiple supervisors and they all have said they don't know the applicants pay.

If you can get into something with multiple units and live in one, you can STR the other units; just be ready to purchase something north of $1m for that strategy.

HelloIf I get the duplicated house information from two agents and I go for one of them, would it be unethical? Or does this happen so often and they really dont care?

Erik i have done multiple of these deals and if you would like to talk about specifics let me know. 

That could result in big savings.If you have multiple syndication investments then the depreciation from one could offset the depreciation recapture from another. 

Creating an LLC: Forming an LLC may offer liability protection and help with structuring multiple properties, but it doesn’t change your ability to take rental property deductions or depreciation.

3.Are there any banks you’d recommend that make it easy to manage multiple accounts or integrate with property management software?

If you are so fragile that someone calling what you said ridiculous causes you to go into multiple long posts, I think you need to look at that.