How about staying in a house in an old charming social neighborhood and nearby the city centre and train station? I have a spare room(s) in my house where you can sleep. It's a 20 minute walk from the city center and the train station so it's easy to go both places without other transport, although busses are available. A supermarket and some shops are only 2 minutes walking away.
It´s possible to stay longer term during the week (not in the weekends), please send me a message to discuss.