Translation of retard in German

There are about fifty families who are having very tight connections. Too tight in my opinion. It's like a small town in this aspect. Joanna though is very satisfied with the place and the atmosphere.
I bought a bottle of water and took a pause to regain my energy. Not long after that I descended again and looked for a cafe place near the central square. To my surprise I found a very modern place.
Somehow at three in the morning I finally fell asleep. The place did not serve breakfast but I went to the northern beach which offered really nice food. I ate some fruits and drank coffee.