Prioritize energy efficiency (e.g. low wattage standby, auto shut-off), user safety features like overheat protection or boil-dry shutoff, and durable construction (stainless, reinforced components). Also look for appliances that are easy to service, with modular parts and accessible access panels. Aesthetics and compactness matter too, in-room appliances that match your room design and fit neatly without cluttering space help maintain a premium look.