Special suggestion: if you mean the size of the heart, if your living room is less than 50 square meters (the clear height is at least 3.5 meters), writing such a large font will be bigger if it is not mounted. This is not harmonious with the whole living room, resulting in a sense of depression. It is suggested that if it is calligraphy, the painting center should be four feet long, that is, 1.33 * 0.68 meters.
If a famous calligrapher wrote it for you, words as big as 1.7 meters wide and about 0.8 will be collected, and everyone's words will be valued by a ruler.
For your reference.