The phrase "suite 703" in a gay context refers to a specific scene or room in a pornographic film where the action takes place. It typically suggests that the content will involve male-on-male sexual activity, often categorized as gay or bisexual. The number "703" is likely just a designation for this particular scene or setting.
In the context of tagging and searching for porn videos, viewers use these tags to find content that specifically interests them. So if someone is looking for gay porn featuring male-on-male action, they may search for "suite 703" or other similar tags.