well-kept

Each front lawn is neat, each hedgerow well-kept.

When he joined, he felt like he had found a well-kept secret.

The political views of America’s second lady are something of a well-kept mystery.

He says this is necessary because when he was young, Belém was "beautiful, well-kept, well cared for", but it has since been "abandoned" and "neglected" with "little interest from the ruling class".

“That is a way of keeping out the diversity of Los Angeles and keeping it a well-kept secret.”