We use the following phrases at a hotel.
Arriving at reception
I'd/We'd like to check in. Hello, I'm Bruno Bianco. I've booked a room for two nights.
Asking for identification
Could I have your passport (s),please ?
Giving information
Breakfast/Internet/Use of the gym is included in the room rate. The restaurants/business center/sauna is on the second floor.
Asking about facilities
Is there a swimming pool?
Do you have a shop?
Where's the cocktail bar?
Asking about payment
Are you all on one credit card?
Could I have your credit card,please?
Complaining about something
The carpet/bathroom/sheets and pillows is/are dirty.
I can't change the temperature wilh the air conditioner/set the alarm clock/turn on the television.
The shower/television/air conditioning isn't working?