We rented a car in Switzerland and enjoyed having it during our trip. We picked it up in Geneva then spent a few days in Montreaux before staying on Lake Thun. On the way we drove by Bern and got lost driving through a Nature Preserve we didn’t fully understand. We stayed in the cutest Airbnb in Oberhofen. One day we drove through Interlaken to Lauterbrunnen and took the gondolas up to Schilthorn. It was one of the best travel experiences we’ve had!
You can navigate by train, but we had more freedom in our car. We weren’t there too long, but Interlaken is probably a pretty decent home base for driving around the alps.