For example, the operable area of the window must be at least 20"x24" and the sill height can't be higher than 44".Side note - IRC also requires bedrooms to be at least 70 sq. ft. and no less than 7' wide in any dimension, so make sure you're making the room big enough too :) Other things to think about when framing in a new room are light switch locations, adding wall outlets, and HVAC.JD also made a good point with the closet.

As much as I try to avoid social media for leisure I will look at tiktok for inspiration. 

They intend to strat charging me more for laundry (which was before always included in my cleaning) but now with so many apartments my cleaners want to start charging me for laundry so another area that could be done better from the start.Then just taking better / more pictures, runnning a social media channel for properties, I wish I also bought cheaper furniture (second hand markets, facebook, offers, etc)Utilizing more dynamic pricing, making sure that all hig demand dates are priced wellAnd so on, so on.

Spend money on social media to target high end buyers.Send post cards to the neighborhood or ask the complex if they know of someone that would be interested. 

What type of information and media about the investment do investors look for when they're sent potential property opportunities?

Unlike a 506c, which you can promote online (social media, newsletter, etc.) and solicit prospective investors publicly, I believe that you can not solicit investors or business publicly if set up as a 506b. 

Even though there is a lot of social media hype around it, I don’t recommend it to my clients. 

What we were trying to avoid is having the 3months of pre-approval run out (let's say Jan if we do it now) and then having to get pre-approved again.

As I have been looking over my books, I am finding that I spent approximately $500,000 last year just on interest, lender fees, etc. for those properties  I have been thinking about posting on my social media accounts, such as Facebook and LinkedIn, seeing if there are any private individuals who have cash sitting in money market or bank accounts, who might be willing to become private money lenders for me. 

Sometimes, it is difficult to choose between digital and traditional media.