If the urban area is too densely populated there may not be enough blooming plants to support a colony. TBH close neighbors wouldn’t really be affected, or even notice, unless they are hyper-aware of bees due to an allergy or phobia. Our neighbor kept bees right beside our apartment complex and no one noticed at all

These wall units look really slick, but the hive entrance needs to be accessable from the outside, and the inside of hive itself needs to be accessable from time to time, even if the beekeeper doesn’t plan on harvesting honey. I only have a little knowledge of beekeeping, but I do know they don’t just run themselves. Keeping a hive healthy requires regular attention and work. Kind of like houseplants, actually