Hi Prateek, There are several amazing cafes in Old Manali like Lazy Dog, Cafe 1947, Himalayan Organics, Cafe Nirvana where you can get amazing vegetarian food. You can stay in Zostel in Old Manali. There are several adventure activities you can experience in Solang Valley near Manali. You can read more about it in the trips attached below. I have also attached few recommended stay option. Keep exploring!