It never occurred to me that I’d have to make the drive to this building for 2 months.

This can help build trust even without reviews.Run Promotions Strategically: Offer introductory discounts or perks (like free early check-in or late check-out) for your first few bookings.

We've been continuously improving it, but it has been working exceptionally well for us since we hired a developer for the complete build-out a year ago.

Anything that involves a load bearing wall will generally need an architect IME, but it can also be required (maybe indirectly) through the jurisdiction's building code/enforcement.Got it, thank you for lending your expertise!

You also have to factor in time limitations.

When you go from a single family to a Duplex, it becomes "comercial" property and according to (Michigan) the local building dept, I had to hire contractors. 

Housing mix will change; more condos and co-ops and multi-family apartment buildings.

Those are some of the unique things we offer in addition to helping each investor build a strategic investment plan & roadmap to achieve your specific goals.

Quote from @Sabian Ripplinger: i want to possibly use hard money this year to grow quicker   and can you use them for new builds  who should i use and  any tips?   

Yes I understand that possibility, that's why I try to build relationships with the builders that I work with so they know that I'm trying to get them a good deal and I know that I can trust them with any potential contracts.