I don't know how to write about Sana without involuntarily salivating excessively, so I'll keep this brief.
If you like Indian food, but don't mind them on a little bit spicier side (or not, just avoid the spicy ones). If you don't mind medium speed service or needing to transfer to a bus after the metro to get there, then this is hands down, the most mouth-watering indian/pakistani restaurent in town.
And it's comparatively much more affordable too and generous portioning.