Not a lawyer and didn’t stay at a Holiday Inn Express last night, but I’m pretty sure that this ruling is entirely consistent with prior decisions.

A lone roommate (Roommate #1 in this example) can give consent for police to search the common area of an apartment or home. If the evidence was found in the other roommate’s (Roommate #2) bedroom or a private area secured by a lock which Roommate #2 only had a key to, there would be problems for the police.