My gf needs to stay in Karlsruhe (or in the neighbourhood), Germany, for 3 months (from March to May) for a research for her's university. We are searching for a room with a kitchen corner, but we have several problems finding it, because we don't speak German at all. The perfect choice could be a guesthouse, or something similar, but at this time we have found a Youth Hostel only, but it can't be a top choice for three months.