Multiple rates are supported.
On hoteliers.com specific rate types can be created for the Single, Triple and Quad use. Those can be mapped in different columns in the mapping.
Packages can be mapped as well, but to retrieve reservations only.
If the Hotel has specific Single Use rates then see the below example;
Example of mapped packages
As you can see the rate code 2DGASTRO and 3DGASTRO are mapped to a package on Hoteliers.com.
Because a package is to retrieve reservations only, it should be set up with "No R&A update" type.