I would leave the render colour and just tile a trim around the base in a pattern and over the arch of the brick. But I also recalled the pizza oven at a pizza place where I grew up. They make great pizza, but the oven is so cool! You could do something like this!

My husband loves the ceiling only suggestions and also keeping the timber below the dado. I'm not as attached to all the wood and after a total revamp .... I had thought white ceilings and lime washing walls, but realised I'm after a brighter interior. I will have a look at different painted wall panelling. Definitely don't want to go from a wood overload to a white overload! MB you are so right choosing a white is the hardest part! I'll be in touch Milray Park. Thanks for the input and advice everyone!!

hi there khiara, I know this is an old post but just wondering did you ever try turboheat and if you did how did you find it? thank you :)

all heaters and stoves should have very specific installation instructions including distance above the stove to any mantlepiece and i suggest you start with advice from local suppliers and then confirm with specific written instructions from each manufacturer that you can usually find on line...There are a number of heaters that have wood fires that are designed to be inbuilt in a purpose made wooden frame so hopefully this can be done inside your opening