B&B and telephone sales

I live in a b & b and I am doing part time evening receptionist job.

In a b&b, telephone selling is quite important. 60-70% of the enquiries are from telephones. And, they may come up any sorts of questions and you got to understand the customers' needs.
Are they price sensitive? If not, you can sell a good price by offering them a king size room or large family room and facing to the garden.

If they are, how much is the price acceptable in their heart? How can you convince them that they could get the best service and your hotel is the most convenient one they can choose?

Our garden is beautiful. It is one of the biggest one around our area. It turns the world from city to countryside within 50 yards distance, where you will find jumping squirrels, singing birds, smiling flowers.