There is so much complexity for each LLC it just eats into your profit and is easily avoidable IMO. 

They've tried selling it in the past for around $400k-600k as well as selling individual cabins; however, there were never qualified buyers.My parents are nearing retirement and the burden of this property is eating into the years they'd like to go elsewhere and enjoy. 

You may want to eat the cost this time (unless Tenants behavior is forcing you to change them) and then add it as a tenant expense for the future.3.

There are countless local places to eat, night clubs, the Philharmonie Berlin, Christopher Street Day Parade in July each year, and here there are more than German cultural influences as the second 'Turkish capital of the world' Berlin is more of diversified, modern city that seems maybe more of a tourist destination than other areas in Germany. 

To expect the contractor to eat inflationary material prices only works when that number is small.

Eats into cash flow so easily.

If i buy the 4 units then i can get a low 30 year fixed rate while if i buy it as a package then i'll have to take out a commercial loan which will probably be 20 years and 4.50% which eats away the monthly cashflow :/I probably need to up my knowledge on portfolio loans as i dont fully understand dynamics but i assumed it will have higher rates similar to a hard money lender? 

When you screw up, you eat the cost of your mistakes. 

I'm in a similar position in that I own property that has appreciated dramatically, but if I sell it, there's nothing I like better that I could afford, and capital gains/depreciation recapture would eat me alive.

They're looking for jobs with a 100% chance of getting paid so you're eating up their ability to earn a living and that's likely why they don't jump every time you call.