Question : How long are most people's visits to Madrid when they fly in from Nassau?
Answer : Of course you're not most people, but if you were, you'd stay roughly 14 days.
Question : Is price more important than specific travel days for you?
Answer : The lowest-cost day to fly in February is Saturday. Being flexible with your travel days garners you even more savings during your booking.
Question : Are prices changing frequently for this route?
Answer : Prices for NAS to MAD do change a lot more than most routes. Remember, the sooner you book, the more you're able to save.