Pretty 2.5 room apartment above Goldbrunnenplatz

I am offering my wonderful 2.5 room garden apartment in a super quiet location for exchange for 3 rooms. It offers:

• Old building charm, high ceilings
• a large, bright living room with open kitchen
• 2 small bedrooms (one is a walk-through room)
• a large bathroom with washing machine and bathtub
• a pretty garden
• a cat flap ;)...

I am looking for:

• 3 rooms, at least 2 lockable rooms
• quiet location, Wiedikon
• a sunny balcony...