The Dream Castle Hotel Paris is suitable for business users due to its extensive meeting and event facilities. There are nine conference rooms altogether, the largest of which is the Richelieu Ballroom. The total conferencing area spans 590 square metres, and there are facilities suitable for between 10 and 350 delegates.
| Boardroom | Cabaret | Classroom | Theatre | |
| Aramis | 12 | - | 10 | 20 |
| Athos | 24 | - | 24 | 50 |
| Constance | 12 | - | 20 | 30 |
| De Treville | 24 | - | 24 | 50 |
| De Treville 1 | 12 | - | 10 | 20 |
| De Treville 2 | 12 | - | 10 | 20 |
| Milady | 12 | - | 10 | 20 |
| Porthos | 24 | - | 24 | 60 |
| Richelieu Ballroom | - | - | 160 | 300 |
The range of rooms means they can be used for a number of different purposes, including receptions and formal boardroom events. The meeting rooms are naturally lit and benefit from facilities including wireless internet access, banqueting menus and AV equipment on request.
