Undoubtedly, the best time to refinish the floors is before you even move in. But if you're past that point, it's also a good project to tackle in fair weather, when you can open the windows to help ventilate the room. Simply move furniture and fixtures into a garage, screened porch, or covered patio until the finish has set. You can even try to make your renovation project match up with your vacation plans. A few days away, and your floors will once again be ready to walk on when you return.