old_contents: import requests
  from .api_exception import RakutenApiException
  from .base_api import BaseApi
  
  class TravelApi(BaseApi):
      def __init__(self, options):
          super(TravelApi, self).__init__(options)
  
      def vacant_hotel_search(self, **kwargs):
          params = self._dict_to_camel_case(kwargs)
          params.update(self._default_params)
          url = self._make_url('/Travel/VacantHotelSearch/20131024')
          r = requests.get(url, params=params)
          if r.status_code == 200:
              result = r.json()
              hotels = [self._parse_hotel(r) for r in result['hotels']]
              return hotels
          else:
              raise RakutenApiException(r.status_code, r.text)
  
      def _parse_hotel(self, hotel_info):
          hotel = hotel_info['hotel'][0]['hotelBasicInfo']
          room_infos = [r['roomInfo'][0]['roomBasicInfo'] for r in hotel_info['hotel'] if 'roomInfo' in r]
          hotel['room_infos'] = room_infos
          return hotel
  
new_contents: import requests
  from .api_exception import RakutenApiException
  from .base_api import BaseApi
  
  class TravelApi(BaseApi):
      def __init__(self, options):
          super(TravelApi, self).__init__(options)
          self._default_params['datumType'] = 1
  
      def vacant_hotel_search(self, **kwargs):
          params = self._dict_to_camel_case(kwargs)
          params.update(self._default_params)
          url = self._make_url('/Travel/VacantHotelSearch/20131024')
          r = requests.get(url, params=params)
          if r.status_code == 200:
              result = r.json()
              hotels = [self._parse_hotel(r) for r in result['hotels']]
              return hotels
          else:
              raise RakutenApiException(r.status_code, r.text)
  
      def _parse_hotel(self, hotel_info):
          hotel = hotel_info['hotel'][0]['hotelBasicInfo']
          room_infos = [r['roomInfo'][0]['roomBasicInfo'] for r in hotel_info['hotel'] if 'roomInfo' in r]
          hotel['room_infos'] = room_infos
          return hotel
  
subject: Change default format to normal longitude/latitude.