From rooftop movie theaters to indoor climbing walls to full-service spas, luxury condos are known to offer a wide range of unique amenities, but have you ever heard of a stroller valet? That’s right – Brooklyn condominium 251 First Street will feature a stroller storage room in the building’s lobby big enough for 50 strollers. Residents can call down to the lobby and request their stroller readied for departure as needed.