I never felt physically threatened, however. Avoid asking directions near schools - teenage boys can get a bit boisterous. As a man I never really felt conformable about asking directions from the women - they would usually just laugh nervously and continue on anyway. Fruit, especially bananas, is widely available. Hygiene standards are sometimes questionable.
Water is always offered but avoid it - it's usually from a barrel rather than a hand pump.
Be sure to wash your hands before and after eating . Water Water in the populated areas is not recommended. I recommend either a portable filer, iodine tablets. Bottled water is widely available in touristy areas but difficult to come by in the country areas. Carry a few litres only.