I've got pretty good neighbours...all a good deal younger than me. All helped with shopping in the early lockdown months.
One couple...he's a painter/ decorator, she works for British Gas...painted the front panels of my and another neighbour's flat, and also installed new gas meter boxes. Free of charge.
I had evil neighbours about 10-12 years ago. They had equally evil toddlers that they allowed to ride motorised mini cars on the balcony outside our flats. It sounded and felt like an underground train. When I complained...nicely, as it was against management regulations...they started harassing me. I'm on the upper 2 floors and they threw a hanging basket plant to the ground, blaming wind. They also placed a plant pot on my doorstep so I'd trip over it. When I'd come up the stairs from shopping, they'd crowd together and block my way. Very intimidating.
It took a few months but they got evicted.
Things have been great since then.