Definitely, this user was asking about the best place to live as a christian
means to be able to practice his christian spiritual life.
I am sorry to tell you that you are in an islamic country and it's not easy to live this spirituality just as in other christian countries.
I am new here, but I know that there's some churches at 'Abo Hamour'
they made them away from the center of the city.
Besides, qatar is full of different nationalities, therefore different religions
So you can live at any place that you prefer, there's no specific places 
for christian or islam or others.