Good neighbors make shared space usable without needing to become close friends.

Neighbourliness is a practical relationship, not an emotional one. You do not have to like the people upstairs to agree about the bins, the noise after eleven and where the bicycles go, and treating that arrangement as requiring friendship first is why some buildings never sort anything out. Reliable courtesy between people who will never be close is a genuine form of care.

Aim for workable rather than warm. Introduce yourself, exchange numbers, sort the practical questions early and keep your side of them. If friendship happens, that is a bonus, and if it does not, you will still have a street that functions.