An RV is a trailer that has all the amenities of a living space. A basic RV has a kitchen, bathroom, and sleeping facilities. As the class of the RV increases, the luxury quotient also goes up. There are many RVs that are even double decked. Nowadays, those RVs that have been maintained well with every kind of luxury item fitted in them have the highest resale value. And we have even seen hot tubs mounted in an RV. A good class RV definitely should have a bathtub in it.