I'll offer to cover it with some paint as a compromise.

And, as @Allen Fletcher points out, they may be reduced and compromised in order to settle the matter (unless municipality has their eyes on property for another use). 

It sounds you might be on the verge on losing out on wither a lot of time or a lot of money or both. if you can't come to a reasonable compromise with the family and quickly then the property probably isn't worth your time.

I see specific opportunities to significantly reduce costs without compromising on the experience that seems to attract that higher nightly rate.

If they’re still resistant, you might want to consider negotiating a compromise, like a smaller increase or a gradual rise over time to ease the adjustment.

To make a lot of money as a PM, I think you've got to make compromises that I'm simply not willing to make. 

If I felt that way, I wouldn't make the agreement to begin with and I work hard to communicate clearly, calmly, and effectively to keep it from getting to that point.I am also open to compromise as my lease offers me protections that I may not need to exercise in all situations to get a fair outcome. 

So far it's worked out as a few of my contractors place the orders with their distributors and then I call in for payment (@Svetlana Kazantseva - this might be a good compromise).  

Even when the a street has both the plex properties will be on the lots that are less desirable or lots that are large but can not be divided.So, any solution that focuses on a plex and a family home is a compromise.

I think BRRRR can still work really well under 2 conditions: 1) you have another substantial source of income and your capital is somewhat renewable (I don't) or 2) you're willing to compromise on your target areas and move to secondary, tertiary, or out of state markets (I am not) or 3)  you're very lucky and/or skilled at acquisitions (I am from time to time).