Translation:We have two bathrooms.
两 is used to express generic quantity (i.e. chairs, tables, cars, number of times happened), whereas 二 is used to express numerical scientific units (i.e. time, date) or digit (i.e. phone numbers, location address).
Sometimes, 二 is used when combining with traditional units and quantities; for instance, 二百 (two hundred). Some people also use 两百.