@BDforever use OYO rooms. They have a site and it will give you various pricing options. Oyo Rooms takes rooms from existing hotels, refurbishes them and makes it available. So quality is varying, but, it is a good option. But, first select the hospital and check what arrangements can be made by them.
If the hospital you are talking about is near Whitefield, Bangalore, I would seriously recommend only taking accommodation in Whitefield. It will save on travel expenses and a lot of time. This is the east end of the city. Else, if its another branch, I can recommend a relevant area.
I am not currently in Bangalore. Will be back by end of this month. In case, he needs any on ground help in January, you can connect him with me. My email id is with @Taybigay or you can send me your email id via the admin and will reply.