Suggest some economic place to eat

Being living in sector 55/56 for a while now. And food ordering online is just too costly can anyone suggest some better options to eat out or to order food from, preferred for vegetarian options. Also, any suggestions on how to find place where I can like stay for a couple of days and leave... like every week or so.. I don't want to live in gurgaon or shift completely here.... any suggestions are welcome.