Don´t know the best shopping street but there is a Carmina store in Barcelona Quite a small store and not as good selection as in the Palma store, not when i was there anyway.Carmina has the info you need to find it at their website.
Stuff for sale. I´ll take offers, PM if you want pics. I ship worldwide.
Carmina snuff suede oxford semi brouges (BNIB) Forest, UK7
Carmina black cap toe, Detroit, UK7.5
C&J Chealsea, chestnut, UK8E
C&J Cheapstow, tan grain, (2 wears), UK7E
C&J Northcote, dark brown, UK7.5E
PT01 navy chino, size euro 44, brand new but hemmed
J.Lindeberg light grey flannel trousers, euro 46