IET Lucknow is a pretty old college. As it is quite old you cannot expect the infrastructure to be in a good state even though there is lots of maintenance. My sister used to be a student of IET and here is some of her insight on the institute.
Though IET is an old college, it is Government College and cost-effective. The one who doesn’t get into IITs or NIT’s for some reason can join IET. ECE and CSE are most reputed in IET.