I owned a Coleman Taos for 20 years and passed it on to family.
Taos is an 8' box, so all it had was a sink, heater, table, some lights and a stove. As ex-backpackers with little kids we thought the heater would be priceless. As it turns out the battery wouldn't run it for more than a few hours. Simply having a secure roof and a place to store all the camping gear turned out to be the best part. Yeah, I'd do it again.
Having the stove that moved outside was so great we made sure our new 5er had the same thing.
No bathroom or fridge didn't bother us till getting up in the night was physically hard. A week in it was about our limit, but we rarely had a chance to do anything more anyway. The Coleman came with a really good cooler that kept a block of ice for 3-4 days.
We towed this 1600lb trailer with a 1999 Subaru Legacy and then an Outback. Almost anything could do the same.