So I’ve read that unbrella insurance providers require you to use them for car and home.

I agree with Collin.At the very least, you need 2nd home, "vacation rental" insurance.

Do any of the tenants have Dogs (Breed restrictions are individual to each company).These may not prevent you from getting insurance but they may limit the number of companies willing to insure it.

Self-insurance is really no insurance.

I live in Fl. where insurance is pretty costly but I am also investing in states where insurance seems less expensive.

Quote from @Mack Tesfa: Looking on recommendation for insurance provider for multifamily in Texas, Hidalgo county ,any experiencethank you   sent a DM if you'd like assistance

Workers’ compensation insurance is mandatory if you have employees.

Insurance market across the country is very tough, especially for older product. 

Unless there is an emergency situation, take a lot of photos and call your insurance agent before doing any repairs.

Quote from @Dyllon Gibbs: Hi All,Does anyone have experience with rent guarantee insurance and any specific companies?