Courtyard by Marriott Boston Downtown — Event Spaces & Capacities
275 Tremont St, Boston, MA 02116
Courtyard by Marriott Boston Downtown gives Boston event planners 9 spaces to work with across 16,988 sq ft1,578 m² of function space. The largest room, Bradford Ballroom, hosts up to 500 guests. Review the layouts and seating capacities below, then test your setup in 3D — free.
Floor plans
Detailed floor plans for Courtyard by Marriott Boston Downtown are published on the venue’s official site.
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Room capacities & dimensions
| Space | Sq ft / m² | Ceiling | Banquet | Theater | Classroom | Reception | Conference | U-Shape |
|---|---|---|---|---|---|---|---|---|
| Bradford BallroomPlan this room → | 4,320 sq ft401 m² | 17 ft5.2 m | 320 | 500 | 240 | 450 | 78 | 84 |
| Executive BoardroomPlan this room → | 345 sq ft32 m² | 10 ft3 m | — | — | — | — | 12 | — |
| Library RoomPlan this room → | 1,620 sq ft151 m² | 13 ft4 m | 100 | 140 | 84 | 130 | 42 | 48 |
| Shubert-Charles (Theatre Ballroom)Plan this room → | 1,155 sq ft107 m² | 10 ft3 m | 80 | 125 | 60 | 115 | 30 | 36 |
| Theater BallroomPlan this room → | 3,201 sq ft297 m² | 10 ft3 m | 210 | 250 | 170 | 300 | 78 | 78 |
| Washington BallroomPlan this room → | 3,570 sq ft332 m² | 12 ft3.7 m | 250 | 350 | 219 | 350 | 70 | 68 |
| Wilbur-Colonial Room (Theatre Ballroom)Plan this room → | 1,674 sq ft156 m² | 10 ft3 m | 140 | 215 | 112 | 175 | 52 | 57 |
Additional spaces (dimensions only) (2)
| Space | Sq ft / m² | Ceiling |
|---|---|---|
| Elks RoomPlan this room → | 690 sq ft64 m² | 8 ft2.4 m |
| Post No. 10 Private Dining RoomPlan this room → | 413 sq ft38 m² | — |
Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.