Home Safe Recommendation

Currently have all our valuable items and documents in a bank safe deposit box. We want to get a safe and store these items in the home along with guns. I don’t really know exactly what to look for in terms of fire / water ratings. I would assume the fire department could be at our house within 15-20 minutes given our suburban location. What are the important criteria to look for ? Additionally, would a wall safe be better than floor safe ?