The place your school put you up in probably didn't charge US$75/night. In my experience (in Taiwan), many decent, modern hotels offer 2- to 4-hour couples pack

The place your school put you up in probably didn't charge US$75/night. In my experience (in Taiwan), many decent, modern hotels offer 2- to 4-hour couples packages just to tap that extra segment of the market. In addition to those, there are definitely seedy places where you can get a room for 3 hours for around US$15.