I'm not sure where you are located. In the States the smaller stoves are 24" wide. I don't think they make them any narrower. Unfortunately, I have one in my kitchen that fits into the space between two cabinets so I am stuck with that width.
I am not happy with the size of that oven for a multitude of reasons but my 6 qt dutch oven fits in it just fine. Nothing else will while it is in there. With an oven that size, you can only fit one piece of cookware at a time, no matter how small the piece and you have to be sure to buy smaller than average sheet pans. The sheet pan size that is most commonly found simply will not fit.
I also find that even when the oven thermometer verifies that I am baking things at the temperature specified in the recipe, many batter-based baked goods take up to 10 minutes LESS time to be done.