I guess some people associate 'beach' homes with weatherboard cladding, inside wall panelling, and wooden floor boards to give that relaxed vibe. I personally thing stone would also look effective and require less maintenance in comparison to the wood. Remember, sand has a tendency to scratch floorboards, therefore, over time, it may require some TLC to restore to original condition. Stone would simply require a vacuum and mop and would give a seamless look to the home.

What finish are you trying to achieve? Have a look on Pintrest for furniture makeovers. Lots of instructions there.

Why not a round flat top large ottoman, to soften the overall look. The brown modular lounge is quite heavy and rather angular (still nice though!). You could select a soft pattern fabric, perhaps like this: Then some large feather filled scatter cushions for the sofa in the same pattern + some complementary prints. If you're in NSW or VIC we custom make ottomans in any dimensions or fabric you like - https://www.strictlycomfort.com.au/lounge-room/ottomans.html Hopefully this helps!

You will definitely need a rug but more importantly you need to consider your other furniture in the space and the style you are going for. This is a formal table do you live a formal lifestyle? There are only four chairs, is this enough for your needs as this table does not really lend itself to an eclectic range of chairs that less formal timber tables offer. I am a great believer in not rushing choices with a new home - the right pieces will reveal themselves once you figure out how you will live in the space. All the best with your decisions and enjoy your new home.