If you want to enjoy the atmosphere of the city, then you should go on a walking tour of Denpasar. Denpasar is not a large city, so you can get around in a day. If you are afraid of getting lost or encountering other troubles, you can go on a Denpasar hiking tour. The price of such a Denpasar walking tour will not exceed 400,000 IDR.
If you want to make your own Denpasar walking itinerary, it should definitely include the memorial of the last battle for the island's independence, the sacred Lake Batan, the fruit market, the submerged Ulun Danu temple and a lookout point that has a stunning view of the three lakes.
Whichever Denpasar itinerary you choose, the best end to such a trip is a visit to a wild waterfall. To get there, you will have to follow a trail through the wild jungle.