For me to answer this question, I need to see the space. There are a few things I look at when making a decision. First, is the space visually busy already? I rarely do accent walls in areas such as kitchens and baths as there is usually a lot going on in those spaces. You don't want to make it too busy. If the answer is "no", then take a look at the architecture of the room. Is there a wall that is pretty symmetrical? If there are windows and doors on that wall, I prefer them to look balanced on the accent wall. Sometimes a wall will be perfect except for a tiny section of the wall that is cut out or spreads off in another direction. Think when stairs create an odd cut or bump out in the drywall. If you were to add an accent color, that unusual part of the wall will stand out, and it shouldn't. So, it's not an easy "yes" or "no", you need to take a look at the space. Remember, accent walls are meant to make your eye focus on it. Make sure it highlights what you want to. Nice artwork, a headboard, etc. Accent walls can also help to define "rooms" when the floor plan is very open. Add a slightly richer color to a wall in the dining or living space and it can make all the difference.