Kauf dich Glücklich (Kastanienallee 54): Great waffles. If you buy something in the clothes store upstairs you get a free waffle voucher.
Napoljonska (Kastanienalle 43): Cutesy place with a pink colour scheme. Vegan waffles (also normal ones) and good coffee.
Engelberg (Oderbergerstr. 21): Lovely café with great German cold meats, pastries and daily specials. I loved the asparagus with smoked ham and chive pancakes.
Le Petit Fleury (Weinbergsweg 5): Sister café to the ever so popular Café Fleury (just opposite). This is a much quieter place with a Scandinavian feel to it. They do great breakfast and flammekuche.