The cabinetry appears to be maple. You have MULTIPLE flooring types over MULTIPLE levels. It is going to take a strong eye for design to come up with a vision for this home. The unification of ALL flooring surfaces will get you MANY STEPS closer to your desired look.
Right now the counters are paired to work with maple. They have blue in them so it would be an easy conversion to white and then add in some beach accents = not a problem. The 4" stone back splash is dated but can be worked with....
You will notice the PALE wood floors in all of your beach-inspired photos! Pale, natural wood is a GREAT way to begin the "beach house" transformation. To do that, you need floors that will do that.
The parquet (the block like wood in the lounge area beside the kitchen) can be sanded and refinished in a WATER BASED finish = pale wood instead of yellow.
The kitchen floor LOOKS LIKE it is a wood of some sort. It was an after thought with someone thinking it would be a good idea to throw down something (anything) that would kinda-sorta look OKish with the parquet. If this is real wood, then simply sand/refinish the same as the parquet. The problem I see is that it may NOT be a species match. Hard to tell from your photos.
Leave the stairs as they are already a pale wood tone with just a hint of yellow. Perfect. Leave them. They are already in "the theme" of things.
Wood trim can be painted. Walls can be painted. The floors in the last picture need to be updated (can be Luxury Vinyl in the visual you would like) to become unified. Again, someone thought it was an OK idea to kinda-sorta-match the wood of the stairs without doing it properly (ie removing the dated stone-look stuff at the base of the stairs).
The hodge-podge of flooring (I can see 5 different looks in 2 different spaces) is what is killing the dream. Getting the flooring unified is going to be your #1 design requirement. Use the pale stair colour as your STARTING point. Find out what "wood look" stuff is real vs. fake. Get the "real stuff" to the paleness of the stairs. Get rid of the fake stuff and start again.
With your vision of "beach house" being blocked with all the design faux pas in this house, I HIGHLY recommend working with a designer to unify this really cool home! It is obvious to me someone did the "cheap" thing by working "piece meal" (one project at a time) without a sense of direction or destination.
Don't do that to yourself. Find someone who will help you create your vision.
Q