I'm looking for a reliable painter to refresh the interior of my living room. The job involves preparing the walls, filling low spots, sanding as needed, and applying a couple of coats of quality emulsion. I’d like a smooth, even finish with clean edges along the ceiling and trim. The walls are about 25-30 square meters. Preference for eco-friendly paints and minimal mess, with protection for floors and furniture. If you can also do minor touch-up work around a few light switch plates, that would be a plus. Please share roughly how long you think it will take and any preparation tips I should follow beforehand.