I second Goldorak that Accor has too many brands.

Four levels (Luxury, Comfort, Economy, Basic) would be enough and easier to understand.

I would keep only one main brand name for each level, for instance :

- Sofitel
- Novotel, Novotel Suites, Novotel Gallery, Novotel Mercure
- Ibis, Ibis 4 Seasons
- Etap, Etap F1