One of my cousins was a part of NITIE Mumbai and has a better outlook regarding the same. Here is what he has to say,

• NITIE Mumbai is equipped with a 16 storied hostel apartment for boys, commonly called the Taylor Hostel, and almost 8 to 10 equipped for the girls, mostly known as the Gilbreth Hostel. 
• The girls’ hostel is quite old and outmoded.
• The rooms of the Gilbreth Hostel, however, are quite a bit more spacious than what is in the boys’ hostel.
• The hostel arrives with 27 rooms on every floor, with a twin sharing policy added. 
• It comes with two beds, two tables and chairs, and two individual cupboards.
• The rooms are gigantic and completely airy. 
• The view side of the institute’s hostel is beyond explanation as well. It overlooks the Vihar Lake on one side, while the Hiranandani Gardens on another. 
• The food you can avail in two messes is commonly known as Sarabhai and Taylor hall. Mostly, the food quality remains constantly the same either way. 
• The hostels also have table tennis courts, and mounted television sets as well.

These are what you should know before finally deciding anything.