One Back Bay is Boston's Newest and Best Full Service Luxury Rental Residence Service of a 5-Star Hotel Located steps from the shopping mecca of Newbury Street and the food & wine lover's paradise of the South End, One Back Bay boasts a combination of exquisite apartment finishes and an array of on-site amenities. In addition to our 24-Hour Concierge, we offer a Resident Service Specialist to assist you with everything you will need to make your life easy and convenient and a Related Personal Assistant who will gladly set-up your utilities, travel, dinner, and hotel reservations.