Not exactly "concrete shells" - you have windows, you have basic plumbing, central heating, electricity, even cable TV and internet cables already installed, an

Not exactly "concrete shells" - you have windows, you have basic plumbing, central heating, electricity, even cable TV and internet cables already installed, and you have all walls painted in white. Everything else you have to do yourself. All newly built apartments in Poland are like this, because that gives the new owner the opportunity to redecorate the apartment to their liking.