Nicolás Repetto, an Argentinian newscaster, purchased a penthouse unit at Northside Piers, according to public records filed on Friday. Repetto is one half of a Buenos Aires power couple, as his wife, Florencia Raggi, is a well-known actress. Un pied-à-terre en caliente Williamsburg, puede ser? StreetEasy is showing very few active listings at either of the Toll Brothers-developed Northside Piers towers. Repetto paid $2.7 million for the spread.