We've owned a 1998 VWt4 California for the last 6 years. The T4 California was the officially VW sanctioned conversion by Westfalia, with a bed upstairs and a rock and roll bed downstairs (A bench seat that folds flat into a bed). We have a fridge, cooker, night heater and wardrobe as well as seats the rotate to the rear when parked up. Me and the wife sleep upstairs and the kids sleep in the driveway awning.
We've driven thousands of kilometres over mainland Europe in all weathers and had loads of adventures.
@Phaeton I use a guy line pegged on the floor from the front wheel to the rear, in order to line up with the tent when we've been away.
It's a little tight with four, but I absolutely love it and wouldn't want anything bigger. The drive away awning is a must though in inclement weather.
California's are made in house by VW now and are a fair price, even our 20 year old van is commanding a fair whack, however they are so well built and cleverly thought out. I also love the size, it's no longer or wider than a Passat estate and easy to drive. Even this old bus has Aircon, cruise control and captains seats.