"I love the weekend" in English idiom is equivalent to "I love weekends".
you know that they actually tried looking for the polish word for weekend, but nothing came out of it http://okruchy.pl/ciekawostki/w-poszukiwaniu-polskiego-odpowiednika-weekendu/
Jellei gave me an accurate answer for the word weekend. In communist times in Poland there was NO weekend and so the word didnt exist. Pre WW11 there was school ( still is school in Europe on Sat or was until recently) and work on a Saturday. That's why I reckon Sunday = niedziela ( no work) because there was no school or work, you went to Church instead. Hence no weekend, only 1 restday. So there was no need for a word for weekend in Polish until the 80's when they adopted the English Weekend!!