We have had W/D in our last 3 RV's. RV's 1 and 2 were used for short adventures of less than 1 week and I removed the W/D's for additional storage. When we started to take longer adventures in RV 2 my SO decided we needed W/D and I filled the storage space with a combo unit and kept about 1/2 of space. We now full time in RV 3 and use the W/D several times a week. I would install a combo unit instead of individual units.
'19 newmar madp 4018
'18 chevy colorado z71