Thirty-five hundred square feet – 3,532, if you want to be exact – is a lot of space. What would you do with it? In the case of this condo loft on Franklin Street, the answer is carve out four bedrooms (all with windows), 2 1/2 bathrooms, a “grand” living room with a fireplace and an open kitchen. (That still leaves plenty of room for several walk-in closets.) The home’s large dimensions are pleasantly accented by cast-iron columns, exposed brick walls, wide-plank maple floors, wood-beamed ceilings and 14 “huge” windows (this is a loft, after all). The master suite has “one of the prettiest” bathrooms (fair enough) with heated marble floors and an “oversized” Jacuzzi (and since when is a Jacuzzi too big?). Agents: Stanley Ginsberg and Valerie Delson, Prudential Douglas Elliman, 212-965-6095 and 212-965-6094