@Susan1709 You can have as many listings as you want for the same property. Many hosts rent out multiple rooms to unrelated guests, so they have a separate listing for each bedroom, and each listing may have use of common areas like the kitchen and the living room. Then they might have another listing for the entire house, and link the calendars, so if they just get a booking for one of the bedrooms, the entire house listing becomes unavailable.
I think what Linda was getting at was that there aren't likely to be a group of 7 people, or even 5, that are looking for a 30 day booking. So if that's what you're after, you'd have better luck listing each bedroom separately. Of course, this creates a different sort of listing, it would become more of an upscale hostel sort of thing, and would require different things from you as a host, like making sure that the common areas are always kept clean, dealing with many independent guests at the same time, rather than a group where one is the booker and the one responsible for the group, etc. and the guests would have to get along with each other.