A **dacha** (Belarusian, Ukrainian and Russian) is a seasonal or year-round second home, often located in the exurbs of post-Soviet countries, including Russia. A cottage or shack serving as a family's main or only home, or an outbuilding, is not considered a dacha, although some dachas recently have been converted to year - round residences and vice versa - wikipedia 
A typical Soviet dacha - wikimedia 
When I go to East Berlin, I will be staying in a freinds traditional **dacha** (I hope). The rules around sleeping and staying in such places are delicate.
# See - Hitchhiker Accomodation