As much as I usually agree with my friend RiskyBusiness, my sailboat crewmembers would have his head for abusing such a fine, expensive wood in that way.
I am against the pressure washing thing all together, I am also against using anything but light sanding with nothing coarser than 220 grit...
The only exception is if the grain is uneven and you want to level it. Then just be careful.
When you are talking trim pieces on the interior or exterior the only way to go is Varnish, and I recommend Ephiphanies. They have many different shades.
As a Charter Boat Captain on a vessel loaded with teak trim, I can say that it is will worth the trouble. If done right, it will catch anybody's eye that goes near your boat.
However, in your case it is the floor. My recommendation here is oil.
Reason being. Varnish is freakin slippery when wet...
If looks are more important than safety, then I have seen many varnish decks that really stand out. I suppose it would be okay if your cockpit is small enough.
I changed my mind, go with the varnish. Or your best bet might be a product that is a mixture of oil and varnish. It doesn't look as good as straight varnish but it last longer than oil.
For that I recommend Cetol.