Spindler is my favorite brunch stop when I'm in the mood for fresh eggs and classy but-yet-simple athmosphere. 

A place where I spend some time almost everyday is the Marheineke Markthalle on Bergmannstraße in Kreuzberg. It's just around the corner from where I live and a great place to buy fresh food and products from local farmers or all kinds of delicatessen from different countries. Many market stalls also sell freshly prepared food and it's always busy at lunchtime. For saturday mornings try the original french croissants.

The Hamburger Bahnhof – 'Museum für Gegenwart' which was originally a train station is a terrific museum featuring a selection of contemporary art.

Just until recently this place used to be one big old Aphoteke (Pharmacy). They have kept the Apotheke's  dark wood Art Deco charm to use in benefit of great coffee and fantastic brunch (try the french toast and you'll see I'm not lying). 

Volksbühne hosts and produces an intriguing program of theatre performances, contemporary dance and concerts.