Nico D.
Yelp
Centrally located, Dame Cakes is a fancy tea room and restaurant on two floors, for the dilettante upper-class ladies having tea and cakes with their friends, and the tired tourist couples with grumpy kids (and these two groups of people don't mesh well, BTW).
Accordingly, prices are a little high but you get what you pay for: all pastries are fresh and excellent, teas are Mariage Freres (one of the best houses). The decor is also refined, and they have a nice little courtyard with tables, for the 3 days per year that it does not rain in Rouen. They also offer a lunch service, with savoury tarts and salads, which are pretty decent.
So this should have been worth 4 stars easily, but service is very slow and sometimes cold. And none of the staff could make a full sentence in English. So you'd better be able to speak some French in there.
So, a good option if you are not in a hurry and can speak rudimentary French.