Our motorhome come with a Splendide 2000 and we use it all the time as we travel. Everything is in one box and works off 120 VAC. You will need a hot and cold water line, drain pipe into Gray tank, plus a vent to outside if you pick the vented model. This one cost less to use. The vent-less model will use a good bit of water to dry the load.
Over the years of hard working the machine has needed repair a couple time. I have fixed all problems found to date. One was bad wire lug on heater fuse link and blew the fuse link. One was bad lug on input at 120 VAC line. Last repair was to replace the two shock tubes at bottom due to old age and use. Machine will jump up and down if the shocks are bad. New model stocks fixed that problem. Price to replace all parts cost less than $200 with shipping in this price.
Wife runs that little machine all the time (if is running now) and would stop RV travel if it were not on board. We never used machines in RV parks if can get out of it. Had to do this one time due to parts on order. 15 years of service so far on machine.