I bought this and in 6.5 M as they are roomy in the front and i have a 6.5C in normal street shoes. Also these are open toed so did not go up half a size as these being mediums.  They are very pretty and i bought the tan, which is really bronze-ish in color.  I love blingy things for my salsa dance and these give plenty of it!  They are comfortable to wear right out of the box. They are rather delicately made but as I have 5 or 6 pairs of salsa shoes (including 2 capezios) i hope the wear and tear will be less on each pair. I have already bought 2 pairs in TT Dancewear other design salsa shoes.  In gold and black. They needed a slight time in getting used to in a after a few dances in them. But I realise the most comfortable to dance in is their 2.5 in heel.  I tend to lose balance in their 3 in gold ones I bought. They also should give a bag to carry in as carrying in a plastic bag to a dance seems tacky.
All in all I would recommend them and for the price they are good comfortable shoes to dance in. I mean they are not Werner Kerns!