Charlie’s is a South End institution that earned a local reputation before desegregation because it was one of the few late night eateries that opened its doors to patrons of all colors. It’s hard not to feel right at home when you walk into this restaurant that looks like a cross between a coffee shop and soda fountain. It has a classic neighborhood-feel: the walls lined with famous signed photos and a counter with spinning stools filled with patrons engaging in friendly chatter. Little has changed since Charlie’s opened in 1927 (except now it serves only breakfast and lunch) – in fact it is one of the few places in Boston that is grandfathered to legally operate without a bathroom.