For 1K getting a hotel at hitec city area is near to impossible. I suggest you check out service apartments which would be in the 2K range. Or best is to stay in Sec'bad and travel to hitec city, it will work out much cheaper.
Here is one website with a review of one of the service apartment. Search for others in the same website
Read Falcons Nest Serviced Apartments, Hyderabad Reviews / Ratings, Hyderabad Hotels India: Oktatabyebye.com