In many European countries (not sure about Holland) you will find the house will be bare on moving in so you will need to buy stoves, curtain rails, carpets, light fittings...you name it.

They probably did a light rehab on it and are now trying to sell it for more than 2x what they paid.  

I'll try not to be a Debbie downer but try to shed some light on why the numbers might need some work.Purchasing a house for 40k that is listed for 130k is HIGHLY unlikely. 

By getting my license it has light a fire under my belt (partially for the amount of time and money I invested in becoming a realtor.)  

I was able to gain an edge here in Scottsdale due to the building being master-metered, with lots of deferred maintenance, and about as energy-efficient as a screen door on a submarine.  

We have seen a lot of investment in downtown with the Power & Light District and River Market.

For wear and tear showing ... would you recommend light or darker planks?

I would love to do that myself, and I think old building conversions are some of the coolest projects in town, but I am focussing on other areas because the overwhelming amount of risk and the difficulty lining up financing.However, love the energy -- Keep us posted as to your research progress!

You just have to consider all things (not just money perhaps but your time, energy and sanity LOL).

I am a carpenter/natural builder, and work full time for a small yet powerful contracting company doing historic restoration, general carpentry, natural building, and new builds with a focus on energy efficiency and healthy housing.