Loved the Old Quarter, so different to Australian cities, nice to just walk around and watch the locals. Hired a Green Tourist electric car thing US$7 for an hour to drive around the Old Quarter, was great with the kids as they were tired of walking. You can hire them from the north side of Hoan Kiem Lake, opposite the Water Puppet Theatre. Shopping was ok, somethings cheap, some not. Found replica Converse shoes for $10. Lots of street food stalls worth just walking around and getting lost in the streets that all look pretty similar. You can always jump in a taxi at the end if you get lost.