The error was that it was getting the id data as int and I was trying to pass in a string:

Error:

Traceback (most recent call last):
  File "E:\PythonProjects\py_apps\py_hotelBooking\main.py", line 35, in <module>
    hotel.isAvailable()
  File "E:\PythonProjects\py_apps\py_hotelBooking\main.py", line 20, in isAvailable
    if available == "yes":
       ^^^^^^^^^^^^^^^^^^
  File "E:\PythonProjects\py_apps\py_hotelBooking\.venv\Lib\site-packages\pandas\core\generic.py", line 1577, in __nonzero__
    raise ValueError(
ValueError: The truth value of a DataFrame is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

Fix:

add the "dtype=str" to the parameter so that it reads everything as string
df = pd.read_csv("assets/hotels.csv", dtype=str)