Dear clients, I hope that you and your beloved ones are in good health.
I've explained the general guidelines that define this design in the first 3D floorplan.
I took a wild guess doing this open space for the social areas, which are placed next to the sea-facing windows. I've done this because, as you said that you usually have some guests most of the time, I think it would be cool for you to host an evening and have these amazing views all the time for you and your friends to admire.
I tried to design this house as much as close to the reference files that you place here, I hope that I've achieved the sober and coastal style that you are looking for, for that, if I am the winner, do not hesitate to contact me to continue helping you until you build the house of your dreams. I hope this design fits your expectations. I'm also uploading the cad file and also a SketchUp file, for you to see this design in this 3d software.
Without further ado, I wish you the best in life. Kind regards.
*Note for GoPillar supervisor, I've talked to the live support asking if I could upload a render if the designer didn't ask for it, and they told me that I could upload as many renders as needed in the floorplan section, so they guaranteed me that this will not disqualify my project.