I had a park model set up at the beach. It has regular plumbing fixtures. Drains directly into septic tank. This means no gray or black water tanks to deal with. We had a small out building that had a washer and dryer in it. It’s great if you ain’t pulling it around for awhile.a "Park Model" RV trailer is generally the largest trailer-home that's made at 400 sq feet and they hold their value well, maybe even increase if kept in good condition.
Although they have wheels, tag registration and can be transported, they are generally placed for long-term park use due to their large size.
They are more commonly seen/found in vacation, retirement and elderly communities.
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I also stayed in a bumper pull camper while working out of town. Black water tanks fill up at the worse times. Below freezing, late at night, etc. You would have to keep a eye on it.