The way the guests were treated in the hotel influenced their evaluation of the service
主语是the way the guests were treated in the hotel 客人们在宾馆里被招待的方式
谓语 influenced 影响
宾语 their evaluation of the service 客人们对服务的评价
the way 后面是定语从句 the guests were treated in the hotel
其实这个句子可以简写为 the way influenced evaluation of the service
客人们在宾馆里被招待的方式影响客人们对服务的评价