: I wrote a plugin that does most of what you have mentioned. I have not included credit card payments for the reason that I'm not sure if wordpress is secure enough to keep this kind of

I wrote a plugin that does most of what you have mentioned.

I have not included credit card payments for the reason that I'm not sure if wordpress is secure enough to keep this kind of sensitive data. I have added paypal though, and paypal does accept credit cards.

If you are still interested there is a free version here: wp-easybooking.com/9-easybooking-plugin-free-.html
There is a demo here: wp-easybooking.com/demo.
The free version offers:

Unlimited hotels
Unlimited Room types
Unlimited Hotel Owners who can edit their hotels and manage their bookings
All hotel owners may have unlimited hotels
Multilingual
Automatic currency conversion
Bookings statuses (Pending, Confirmed, Cancelled, Completed and Expired)
Search widget
Search by location or hotel name
Bank payment or PayPal payment available
Guests may view their booking's status and details on-line by using their booking number and PIN (sent by email)
...and more

In a premium version (not free), the admin can create Package deals (business deals), and define the amount each hotels owes him (fee). The fee may be a periodical amount (like 100$ each month), or a percentage of bookings price (15% of months bookings), or a combination of these two charging methods.