Some names of the places which are best for vacation in India as you and your friends with your families want to go for fun for 7 days are as follows:

Agra, Uttar Pradesh
Ahmedabad, India
Andaman & Nicobar Islands
Bangalore, Karnataka
Bhutan
Chennai, India
Coonoor, Tamil Nadu
Coorg (Kodagu)
Darjeeling
Goa
Gurgaon, Haryana
Haridwar, India
Hyderabad, India
Jaipur , Rajasthan
Jaisalmer, Rajasthan
Jodhpur, India
Kashmir
Kochi, Kerala
Kodaikanal, Tamil Nadu
Kolkata, West Bengal
Ladakh
Mahabaleshwar
Manali
Mount Abu, Rajasthan
Mumbai, Maharashtra
Munnar, Kerala
New Delhi,
Ooty
Panchmarhi, Madhya Pradesh
Pondicherry, India
Pune, India
Rishikesh
Shillong, Meghalaya
Shimla
Sikkim
Tawang
Thrissur, India
Tirunelveli, India
Udaipur, Rajasthan
Varkala, India
Visakhapatnam (Vizag), India
Wayanad, Kerala