RoopamWould you still not recommend me doing it myself.
I've done floating floors and they've come up really well.
And, as I've said, I've done the sanding.
But if your place is of a very high standard, you will want a top finish. In that case, get it done professionally.
But if it's older, a bit knocked about, perhaps it won't be worth the value.
Perhaps have a talk to your local real estate agent in terms of rentability and value added. They should be able to give you a few clues.