Need place to stay to visit a hospital

I need a help I have one friend.. He recently had a baby girl 6 months ago.. But that baby is suffering from almost total vision loss. She had been undergoing treatment at sankar netralaya, numgambakkam from last 4 months.. Now the hospital advised them to keep the kid under observation for atleast 7 days and if everything went okay, they are going to operate on her.. So my friend need a place to stay for about a month (upper limit).. There are 5 people(5 adult+1kid)coming from meerut(Uttar Pradesh). So anyone have any idea of any flat available nearby the sankar Netralaya, nungambakkam? Or know someone who can provide the accommodation in that area as it would be great help..any other option of staying where 5 people can stay as hotels are very expensive. This is their 5th visit in chennai and per visit per room in hotel costs 2K but now stay is for longer period and in staying only they will exhaust 1lakh+ food extra.. So its better to get place where there is kitchen so that they can prepare their own food.. Atleast somewhere money can be saved.. Thank you in advance for replying.