Rush hour is about noon, when most of the rarities already found a buyer; so try to come early. It is mostly wild and loud; but only for calmer souls. On every corner haggle and weigh out. It is quite usual to negotiate a price which is half the one (or even more) they tell you in the beginning; knowledge about material and language required though. It is getting strange when among the hustle an old woman receives a dental treatment from a man in a white coat. Strange on the one hand, normality for the people from there.
On a sunny Sunday therefore, you will have quite some enjoyable time around here. Wandering past the sometimes more or less professionally build stalls and perhaps managing to grab a real bargain. Nobody complains when eventually you do not buy the object you take into consideration. Sometimes they, after you decide not to buy, even yell at you absurd cheap price to convince you after all.