She is super knowledgeable in the area, and she has aided me on dozens of profitable transactions.

Also the city makes every single architect super busy and they does not seem to be interested to invest to much time for this small stuff.

If it were me, I'd find other "super hosts" nearby and reach out to them directly.

Any insight would be super appreciated.

ASK A LAWYER IF THIS IS ACCUARTE:If you rent to someone who works for you, you can't charge them more than the cost of renting the place to them, and that's only if it's not for your benefit.If it IS for your benefit, now you know why most supers don't pay rent: it's not kindness, it's the law:https://www.law.cornell.edu/uscode/text/29/203So whatever it costs YOU (not market rent) would be the limit you can charge in the best-case scenario, and it's possible you might not be able to charge them at all. 

If it is super tight and the garage is needed to park cars, then it could possibly affect your value. 

It should be super easy barely any inconvenience today.

More time to read BiggerPockets.It's all about your risk tolerance and whether you want to get rich super slow or want to move things along faster. 

My goal is to really add value with a quick video every week so these great suggestions are super helpful!

I use an excel spreadsheet which can be found by googling: Michael Blank's analyzer.No matter what, you should get very comfortable with the Cap Rate, NOI, Purchase Price formula.Cap Rate = Annual NOI / Total Purchase PriceAnnual NOI = (Income - Operating Expenses) * 12Once you have a handle on that, then I would move on to learning how to get those numbers which go into the formula:Here's a good summary of valuing a multifamily property: https://www.biggerpockets.com/renewsblog/2013/04/0...Here is a lengthy and super detailed blogpost on the same topic.