Depending on what state you're in, you may need a real estate broker's license to start and operate a management company.

I am a complete rookie to the real estate scene, I am looking to house hack for my first residence out of college.

I think you run a real risk of your second rental eating up the profits you're enjoying on the first one.

And while nothing is foolproof the most consistent method of finding good vendors is relying on OTHER real estate investors that have worked with those vendors. 

Hey, Noobie here but am looking at MTR as an initial step into real estate investing.

IF it is a real problem, then yes, fix it.I would build a fir-in wall out of 2x2s and insulate it heavily (Rockwool comes to mind https://www.rockwool.com/north-america/) There is also drywall that is made for this.

Don't own real estate then.

S-Corps are generally for active income (think Flip, Real Estate Agrent) andLLCs are generally for passive income (like rentals/STRs)The LLC and insurance is what investors are calling “Asset Protection” and it’s something you’ll want to invest in.

Historically, real estate will appreciate over the long term.  

I recently took a leap of faith and invested in a mentorship program with Tom Zeeb and his Total Traction Real Estate Mentors program.