What are you trying to achieve with this arrangement? If it's for more bargaining power, I would advise concentrate on a few properties so as to gain more discount from these properties. But that really depends on how many room nights one is talking about. Typically, a travel company who does inbounds can give as many as 2,000 room nights a month, unless you're at that level it's unlikely you will gain substantial discount from Accor corporate. Accor Corporate customarily gives 10% off BAR for SME customers.