Customs is a great map but for beginners and early quests, it's terrible. If the devs would open up the bottom area (red) and add a few more holes in walls (yellow),
Checking - The Official Escape from Tarkov Wiki
Getting the pocket watch [Escape from Tarkov] Customs map - YouTube
Checking - The Official Escape from Tarkov Wiki
Escape From Tarkov "Checking" Quest Guide
How to find the Bronze Pocket Watch in Escape From Tarkov