My house is in walking distance of the centre of Groningen and also very close to Noorderplantsoen. It is a quiet street. There a two rooms, one double and a single. I will be more then happy to help making your visit a succes.
Smoking in the house is not allowed (in the garden is oke of course). Further more I expect you to respect my home and leave kitchen, bathroom and toilet like the way you found it/keep it normal clean.