We live directly above the most famous of Berlin's historic market halls, Markthalle 9, where special markets (Sweets Market, Streetfood Market, Breakfast Market) are held regularly and many people come to see them. There are many small galleries and museums in the area, one of the nicest restaurants nearby is the 3 Schwestern in the historic Bethanien complex. The Berlin Wall was also very close to our apartment, today there is a long green path as well as a beautiful basin (Engelsbecken), on the shore of which you can drink coffee.
There are many cafes, especially if you walk towards the canal, for example La Maison, where there is a long queue when the weather is nice. On Tuesdays and Fridays there is a vegetable market on the waterfront (Maybachufer), and on Saturdays there is a fabric market, all three are very worth seeing!
The ice cream parlors in the area are also highly recommended, from zàgara to Aldemir to duo siciliano, it's hard to pick a favorite!