My van has windows all the way around. I wasn't specifically looking for a van with windows but found a fan I like that happen to have them. I'm still working on the conversion and have only done a couple trips in it so far, but here are my thoughts:
- The windows are really nice for enjoying the views while in the van. If you think you'll spend a lot of time inside the van while parked in nice places, the windows will be nice
- With certain layouts the windows help the van interior to feel much more open and spacious and not like a closet
- If you'll be doing mostly stealth camping, the windows become a burden as you will probably want to cover them up. I've been making curtains recently to cover my windows and to try to block out all the interior light from being visible from the outside. It has taken quite a bit of work and also since I have a lot of windows I have a lot of curtains. I'll probably be taking them off the windows while not in use and this means I'll have to store a lot of curtains.
- If you'll be in cold areas a lot, the windows will let out a lot more heat compared to having a windowless van with insulation.
- Having more windows means more chances for water leaks. Water was getting in through one of my windows for a while and that can be pretty annoying.
So it's mostly a question of whether the views and more open feeling is worth some of the drawbacks. For me so far, I'm happy I have the windows.