Dear ...,
Life in a big city has its own good and bad moments, I should say. There are a lot of traffic jams, noise and the air is very polluted.
I am for living in a big city and, to tell you the truth, good friends because there a lot of people in the city.
I shall be in ... for a couple of days next month, and I was wondering if we could meet together. It has been such a long time since we met and I am very anxious to hear how things are with you.
Best wishes and see you soon,
...