If you wish to visit down south, Alappuzha and Munnar in Kerala. Budget accommodation, transportation re available at both places. If you have time visit, the old jew town in Mattancherry and Fortkochi.
Hey Ankita! It's always so great to see women moving out of their comfort zone and opting to travel solo. I'm sure you'll have a great time. Here are a few places near Delhi that I would like to suggest you to visit. 1. Visit Glamp Eco in Hampta, near Manali 2. E-Living by Mudhouse Experiential in Jibhi, Tirthan Valley 3. Check out Hots Hostels, Bhujiaghat in Uttarakhand
4. Chitkul's Zostel
5. Other solo traveller friendly places that you can visit are Mcleodganj, Naggar, Landour and Bir. You will find information on all these places on Tripoto :) Hope you have a great time!