It’s not uncommon for white spots or heat marks to appear on wooden furniture, and I’m glad to hear that you were able to successfully remove them! The method you described using an iron and a cloth is a common and effective way to deal with these issues. Here are a few additional tips for maintaining and protecting your wooden furniture:

1. Use Coasters: To prevent future heat marks or water rings, always use coasters or placemats for hot dishes, glasses, and mugs.
2. Regular Cleaning: Dust your wooden furniture regularly with a soft, lint-free cloth. Avoid using abrasive materials that can scratch the surface.
3. Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause wood to fade or become discolored. Consider placing your furniture away from direct sunlight or use window treatments to protect it.
4. Furniture Polish: Use a high-quality furniture polish or wood conditioner to keep the wood nourished and looking its best. Follow the manufacturer’s instructions for application.
5. Protective Pads: Consider using felt or rubber pads on the bottom of items like vases, lamps, or decorative objects that could scratch the surface when moved.