This is something you will constantly have to assess and battle with, and perhaps over time, decide is no longer for you.

If the breaker has been replaced and the area around the main panel doesn't reek of burning plastic (electrical components melting  smell about as distinctive as burning hair) there is no safety issue. 

Your goal is to maximize your return, not win every battle.

Renting to students is a good model, and unlikely to run foul of the Portuguese tenant-friendly laws for renewals. 

Although, workers told me that he was always checking what they were doing and wasn't happy that the outside camera got covered, even though it was for the time to apply the paint and then it was removed.He reported the fridge was dead and also figured that a smell of sewer gas in the MB is due to a P-trap that was not installed when the sinks were changed.

Oh, and for some for not-so-good news this property happens to have bed bugs and a putrid smell from animals & rotting food in the fridge.

It's not rented yet so no harm of paint smell, it's actually already dissipated. 

Great question, First let me explain that I manage my own properties (36 properties, with a total of 47 units), all located in the Battle Creek, Mi.

But tipping tenants either die in place, or rush off to the hospital and then to extended medical rehab, or are compulsive hoarders who decide to simply up and flee their previous life.Landlords just look at all the junk left behind and smell all the stink of years and say, "I can't do this.

I know there is a local property fighting this battle and they have not been successful.