I've had dachshunds since I was 5 years old, and they all loved to be burrowed underneath the covers. Even during the summer, they sleep under their all night long. My recent dog is a blanket fiend. He has to have a blanket to burrow himself under, it's like crack to him Does your dachsie do this too?
Pic, my black and tan mini Leroy, with my parents red/tan Simon.