Considering your budget, height and build, the retro motorcycles we would recommend are the Royal Enfield Meteor 350 and Hunter 350. Both have low seat heights, and the lighter Hunter is also more manageable inside the city. If you like the way it looks, you may also consider the Goan Classic 350 because it has a low seat, which will be helpful for your stature.
The Honda CB350 trio are also a good city-focused neo-retro model but they have a seat height of 800mm or more, so we'd suggest taking a test ride to see which one fits you best.

