We had a Deluxe room with two small bottles of complimentary water when we arrived.
On the house
It was my birthday yesterday and the owner let me have the first bottle of wine on the house.
A free ride 白白得到的东西
You're getting a free ride living with your parents. You don't even have to pay rent!
Be sb's for the asking
You father is the director of the company and any job is yours for the asking.
Freebie n. 免费赠品
A: Where did you get that calendar?
B: It was a freebie from work.