Would indeed be too noisy (unless it was fuel cell or some other tech that works at low rates) but you would run off the large battery banks for everything but air conditioning, even for the microwave. The power plant would recharge the batteries in noisy bursts during the day.

Though you could in theory run the AC off the batteries -- modest RV ACs are about 1200 watts, and you can run for several hours off the likely 10kwh of battery a hybrid RV would have -- it might also make sense to look into propane powered AC, which is more expensive but probably cheaper upgrade than having a special generator just for the AC.

I'm not talking about RV detailers who are expensive. Just ordindary house cleaners, same as come to your house! Just cheaper because you can come to them.