You can repeat Area, Colony with City name if you live in Small places. Landmark can be set based on whatever you have.
But Please note whatever Area, Colony you will put - People in your provided Area and Colony will only see - It's Peer to Peer based location generator.
Whatever you put your neighbor needs to provide same information so that they can see, But as soon as they scroll down until City, they will see what other people are posting from that city.