These types of maps just show where people/tourists are which render them not that useful. It needs to be proportionate and comparative. E.g. normalised against daytime population, number of shops, restaurants or hotels so you can compare which similar areas do have more ATMs compared to other less "ugly" areas.
Comparing them against published population maps wont work because 1) those show where locals live 2) not where people go for entertainment and 3) tourists and hotels are not counted as population. Now, it will work if the aim is to go to quiet places with only locals and not much points of interest - I've tried this as a tourist strategy and ended up in an area surrounded by residential tower blocks and one basic cafe and a shop underneath.
Comparing them against published population maps wont work because 1) those show where locals live 2) not where people go for entertainment and 3) tourists and hotels are not counted as population. Now, it will work if the aim is to go to quiet places with only locals and not much points of interest - I've tried this as a tourist strategy and ended up in an area surrounded by residential tower blocks and one basic cafe and a shop underneath.