I may even sweeten the pot and offer to pay them a few thousand to help them with moving costs.

Even Lake Tahoe, NV has properties under 600k that if you manage them correctly you will cash flow. 

First reassessment when closing under my name initially, and then second reassessment when transferring the title to a LLC , even though all happening within 30-60 days in the same year.Any advice would be appreciated.

Property management (pm) should be a line-item in the rental investing scenario, not a ways to cashflow or break-even .

Do not even consider a large apartment building with only your equity.

If you are a super host I am sure you have a lot of other positive reviews, so even if it does not get removed, I am sure you will be fine. 

Some base their decisions strictly on numbers and do not care about the area, while others are okay with a lower yield but focus on the city and even specific neighborhoods.

She makes it very tough to get in and do any repairs even though she likes to complain about things.  

it doesn't cost a lot to put utilities and parking pads in or even entitle it or to purchase land. it's just a lot of work that no one wants to do. parks are hard to get approved but they are not expensive to develop. it's nothing but utilities and parking pads and an office. harder to finance too, but compared to apartment development or mixed use development it is one of the cheapest and highest performing assets because of reduced construction costs. 

Have you been aggressively paying down your mortgage while you are in there to earn even more equity over the longer term?