Cleaning House?

Hi i just bought a foreclosed house and theres somekinda weird smell probally from the house beign empty and the fridge and water in the toilets. Im supposed to move in next weekend but wanna go in and clean everything really good before that. The main things im kinda unsure of is the hardwood floors they look like the varnish is off of them whats the best way to clean them, and the fridge and bathrooms im not gonna use the fridge but cant remove it til next week but wanna atleast get rid of the smell for now