Developers from City Realty and RISE Together is proposing a six-story, 74-room hotel behind the Boston Convention and Exhibition Center in Massachusetts. The 43,000-square-foot hotel would be located at 330 C St. in South Boston, now home to a vacant one-story building that was once a car-repair garage. The development team consists of Fred Starikov and Steven Whalen, managing partners at City Realty, and Brian Anderson, founder and partner at RISE Construction Management and its development affiliate, RISE Together. An entity linked to Starikov, Whalen and Anderson acquired the property from the Tutunjian family for $3.5 million in 2019, real estate records show. The project’s development costs are expected to come to $26.8 million. City Realty proposed another hotel in Boston earlier this year, a 12-story, 80-room building across from the Boston Common. The C Street hotel would include a ground-floor restaurant. Boston’s Group One Partners is serving as architect, RJO’Connell & Associates is serving as the civil engineering and surveying firm, and Adams & Morancy PC as legal counsel.