Hire a mason in Valencia, Spain

I want to have a wall in my dining room demolished to open up the space. The wall is m². Additionally, I need to move the air conditioner to another location in the room. I would like a quote for these masonry works.

I need to build a wall approximately 14 meters long and 2 meters high, similar to the one shown in the image I provided. The wall must include an access door like the one seen in the photo. I would like to receive a quote that includes both the materials and the labor needed to complete the job. Thank you for your help. I need someone capable of building a wall like the one in the image.