My garden includes a holly tree about the height of my house. It's a fine specimen in good health but the position means it is blocking the view from a bedroom window.
Ideally I'd take it out entirely but it also provides valuable screening at lower level from the road passing our house.
If I could reduce it in height about 50% this would be a good compromise but I've no idea if hollies respond well to this and it would look terrible... Also not sure how to do it as holly is so prickly!
It's actually more like a very tall, narrow bush than a tree... Several trunks rise up together.