New sofa bought - donate old sofa
Surely you have already noticed that small cafes are no longer cool and tightly furnished, but often there is a "Loriotsofa" or Grandpa's wing chair. Following this trend, the cafés and common areas in local youth centers are also furnished "comfortably".
Just call the furniture change - also sat-through seating are usually taken with pleasure.
Old mattresses with a blanket over it are sought after in rehearsal rooms of bands, as seating. I know that from my sons, who could use everything.