What is the best way to best way to deal with the existing tenants? 

And the best way to start networking is here on BP and attending your local REIA meetings IMO.

For example if you have to pass through the bedroom to get to another room that may be an issue. 

Do you live in the UK or in the States?

(never heard of them) for triple the rate of the old policy!

Welcome to BP and come on over to the Short Term Rental part of the forums.  

Here are a few tips as you get started:Research the Market: Get to know different neighborhoods in Detroit.

Are you located in the area? 

Live in the Columbus Ohio area.  

With $50K—$100K, you could fund a rehab and refinance to free up most of your equity for the next deal.Cons: BRRRR often requires more hands-on involvement, especially managing contractors and timelines, which could be challenging with your demanding job and family obligations.