Photos of the insides on our two vans were requested, and Tom added some photos of the inside of his van and.. I forgot...
I thought of it last week when I had my van and my camera, so here are some photos. It's a basic SMB RB50 floor plan interior. I deleted the propane option and added the diesel furnace. The only thing I would have used propane for was the stove, and I cook on a portable butane stove, mostly outside on the drop down table off the side door, but I can cook on the counter top inside if the weather sucks. (As I was just typing the previous sentence I realized I need to shoot photos of the box mounted on the side door. It opens up a couple different ways and is very handy. I nicknamed it the Transformer. It's a part of the interior I use a lot when making and eating meals.) I'm very happy with the simple little butane stove. It cooks fast if you need it to and fits inside the Transformer storage cabinet when not in use. The fridge is the smaller one offered by SMB as I'm pretty sure at the time I bought the van the larger fridge was only offered in the EB van. The door to the left of the fridge holds the PortaPotty. I have to admit I use the PortaPotty a lot more often than I ever thought I would. It's great in the middle of the night not having to go outside. The large drawer above the potty cabinet was made to fit a microwave but I tried to keep the camper as simple as possible and went without it. I instead spent money on upgrading the rear axle to a DynaTrac full-floater and got air lockers front and rear. I didn't get any upgrades on electronics as I'm not much into that when I am camping and I figured if I ever want to watch a movie when I'm camping I could bring a laptop computer. Electronics built into a van tend to get outdated every few years, so all I ever added was the cheapest stereo I could find that had a USB cable port on the front. I did that a couple years ago and added a small inline amp and new speakers shortly after that. I have around 1,100 songs on my iPhone and love being able to listen to music on the long pavement portions of trips without having to carry CD's or find radio stations in the middle of nowhere. The rear view shows the bed and storage under it. You can just see the water tank that is under the front edge of the bed.
I sleep downstairs most of the time, unless it's hot out. Then the upper bunk is nice as the five windows can be opened for lots of fresh air. The lower bed has 4" foam and the top bunk is about 2" foam. I use a Termarest on top of the foam on either bed.
I have had the van nine years now and have no complaints about the interior layout design. It's a copy of the old VW bus campers and it works well. The couch folds down into the lower bed. I have traveled for a couple weeks with two people and a small dog and it suited us fine.