Rent out meeting rooms by the hour, half day or full day and let people book and pay online. Booker adds a live calendar to the room page and keeps bookings from overlapping.
How it works
Book by the hour or a longer block, whatever suits the meeting.
List each room separately with its own rate (Pro plan).
Slots are held at add to cart and checked again at checkout.

See every booking and sync it to Google Calendar for your team on the Starter and Pro plans.

Questions
Yes, on the Pro plan. Each room is its own bookable space with its own rate. Rooms in the same product share its hours.
Yes. Set the hours you are open per weekday and block out dates you are closed.
Your choice. Customers can pay in full on any plan, or on the Pro plan you can set a deposit percentage per product so they pay part now, and you collect the remaining balance yourself at the booking.