Fly into Udaipur and spend the day wandering the narrow, hilly lanes of the old city and visiting the vast City Palace. That evening, take a boat ride on Lake Pichola or a cab up to the Monsoon Palace at sunset. If you can, stay at the Lake Palace Hotel, smack in the middle of the lake -- it's a sight in itself. The next day, fly to Jaipur and explore the pink-hue old city.
Take a taxi out of town to the Amer Fort and Palace, then spend the night in one of Jaipur's havelis or palace hotels. On your third day, hire a car and driver to explore Shekhavati, stopping in villages such as Jhunjhunu and Mandawa to see the lovely havelis, some with magnificent frescoes. Treat yourself to a meal at one of the Heritage Hotels. From here you can easily drive to Delhi.
