La reserva está a mi nombre.
When to use
This is highly useful if your travel companion is the one actually speaking to the receptionist, or if the staff is struggling to find the booking under a different guest's surname.
How it works
The phrase uses the preposition 'a' combined with a possessive adjective to indicate who holds the reservation.
- La reserva: The booking
- está: is (verb 'estar')
- a mi nombre: in my name
Grammar
The verb 'estar' is used here rather than 'ser' because it describes the current status or condition of the reservation in the hotel's system.
Notes
Helps staff find the reservation. Neutral everyday wording.