Welcome Stehlin to RV.NET
Does the slide still work OK and the floor seem solid?
Since most RV construction is built from floor up it can be a chore to replace only the base floor.
The main concern I would have is WHY this occurred. Water often comes from above and when that is the case damage can be occurring along the way. IF that is the case getting the water source fixed can often stop new damage. Finding how the water is getting to the floor can be very hard and in a new RV often is from a factory defect in workmanship. If you can prove this then take your issue to the top of the maker's chain of command before you stop.
Best of luck. While 100% of RV's can leak at some point it is bad if they ship leaking.