The think that really fascinated me when I visited the first time was how West Berlin was this little, penned in bit. Outside, the notion w saw depicted of "escaping to the free West Berlin" was of an iron curtain down the middle, rather than West Berlin being a little bit surrounded by the wall. As ever, the reality was much more complex than the simplified media picture we saw outside Germany. I loved Berlin, been far too long since I was last there. Must change that....
I visited West Berlin for the first time in early 80s and my memories on my impressions are quite similar. I remember the city as grey, cramped, often a bit run down and depressive, even so sometimes as slightly provincial, nowadays the center is almost not recognizable.
Once the fence was open we often visited the folks next village across the border and had great times together. Still got a passport full of DDR visa.