I bought an used RV and did some modifications ourselves to be truly independent (more water storage, 500w of solar panels, ...) As we didn't want to be constrained to campsites.
It was a glorious experience. Very tempted to do it again to be honest. We traveled in Italy and Spain for 5 months during the cold periods and in summer we roamed through Scandinavia.
Generally speaking, we spent 2 weeks in each spot, but in few 1 or 2 months (San Vito lo Capo in Sicily comes to mind). We both climb and generally speaking are outdoor persons so we opted to stay away from big cities and choose to park in remote areas in the countryside. This let us get to know the local lifestyle and made friends along the way in A way that is impossible in cities (we both speak Italian, Spanish and English). Going to the only bar/restaurant in these towns every day made our faces familiar to the locals and we got invited over for dinner several times (in italy and spain, that didn't happen in Scandinavia at all).
I highly recommend traveling this way. It's fun, economic and if you are with a good partner an endless pool of amazing memories. Also, this made me rearrange my life priorities. Before I had career on top of my list, now, instead, I just want to be relaxed. I don't want a job that keeps me worried after work hours and I want to spend more time with my family!
Happy to answer all your questions!