I have a friend who is a resident in one of fiitjee's hostel and all you need to do is be carefull about your friends . You may feel lonely in a PG in your initial days  it being optimistic it is good for you to keep you focused and keep you out of disturbance . No one disturbs you and your study schedule . I'll surely agree that the food in the hostel is not that good and often you have to eat something else probably from outside .But in the hostel, you live with your batchmates and you can study as a group especially when you are an extrovert this is a help. As a group we are able to discuss questions and concepts easily. Doubts are cleared even when the faculty is not available or you need more attention Ona particular topic . Over that you are aware of the competition at all times. If you fall sick, you have friends to take care of you. Some help.that I could provide from my research is below:



1- Sarvodaya Enclave : It is a place belonging to rich people with costly cars huge houses and all but most important thing it is a quiet place best for studied since there is no noise at all. It also has its own Mother Dairy booth and Internet Cafe which makes your life a lot easier.



2- Adchini : This place is well connected via Hauz Khas and Malviya Nagar metro stations, also AIIMS and Max Hospitals are nearby. So, all your needs will be fullfilled





For pg I would suggest you to go for Kalu Sarai and surely not Mehrauli as the acxomotion and infrastructure there is way better . And it is located near by .



I hope I was helpful.