I have gifted iphone 4s to my wife a year ago. her hand are small and that device perfectly fits in her hand. I also like its 3.5 inch screen size as it is easy to handle and your finger can go every corner . Now iphone 4s went very affordable. you can buy it under 12000rs. if you are looking for awesome camera then go for it.
One more thing iphone 4s is not that fast as compare to other high-end models like 5s and iphone 6. so if you like to play heavy games then that phone is not for you. buy 5s 32gb minimum as you will need space to install that bulky games.