About The Dagney 89 Broad Street, Boston, MA The 403-room boutique hotel is ideally located at the very corner of work and play, Boston's Financial District and historic Faneuil Hall, two of the largest demand generators in the city. The Dagny rebranding included a $32 million comprehensive investment to create an all-new, immersive lobby experience, luxury guest rooms and bathrooms, enhanced meeting facilities and a state-of-the-art fitness center.