Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

From watching the market and myself investing in Bryan/College Station, people are still renting out these properties nicely.They can be leased as a whole or rented by the room and are usually in great areas, close to the university, grocery stores, and restaurants.

Most hosts have a closet where they store extra supplies, so yes it's very important o have a locked supply closet.Hope this helps!

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

I recommend searching "arbitrage" here and reading any/all of the hundreds of general threads about negative elements of arbitrage.

For most investors, purchasing a room condo makes no sense due to all of the associated human element risks.

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

Each unused lock/deadbolt gets stored in a freezer bag with date and unit the lock was last used on -- so we do not inadvertently place the same lock on the same unit.   

Here's a https://www.irs.gov/businesses/cost-segregation-audit-technique-guide-chapter-4-principal-elements-of-a-quality-cost-segregation-study-and-report to the IRS website noting specific items that are included in the cost segregation study report. hmm, that website is a 404 error.  

Hand them out to your cashier at the grocery store.