Altura GK2 site visit: My power backup doubts

Did a site visit to Altura Greater Kailash 2 on Saturday. Super luxury bolte hain, but power backup ka kya scene hai? Full flat backup milta hai ya sirf common areas? I'm currently in a 2BHK, thinking of upgrading, but if lift bhi baar baar rukti hai, what's the point? Is the price jump worth these basic issues? Already have a home loan, don't want more headaches. Change my mind.