Gemutlich refers to a feeling of comfort, warmth, and well-being. Think of a warm, cozy living room with a blanket on the couch or a dinner party with good friends.
Gemutlich is from the German word Gemüt, which means "feelings, mind, heart, or soul." The -lich part is an adjective ending similar to English -ly as in friendly. Something that is gemutlich is good for the heart. It makes you feel content and comfortable inside, like you belong in this place. You can also describe a person or their personality this way, meaning they're friendly, cheerful, or easy to get along with.