Our 1st RV didn't have a washer dryer and never again. I really don't have anything to add to the previous replies. We'd usually combine our laundry runs with something else such as food shopping, lunch etc. This would cut down on the "boredom factor". When we got our 2nd RV we made them install a vented Splendide" as part of the deal and it was night and day difference. First we didn't need to bring near as many clothes as we used to as weed get up in the morn and do a load. They do take some getting used to and only do small loads so you have to get used to throwing in a load pretty much every chance you get.
Have a buddy who opted not to get one on his "Monaco" they wanted the space. They just bought a new Newmar with a stack-able and his wife now says she doesn't know how they ever got long without one