multiple business line

1. In sales and distribution, how can you accommodate transactions for the ff:

A. hotel services (renting of rooms)

B. real estate (selling)

2. If A&B above cannot be handled by sales&distribution, what module in SAP that can handle them?

3. Is it possible to combine trading business, hotel business and real estate in one company code?

Or it is more advisable to separate each line business and assign different company codes for each business line?