Starting a sentence with "actually..." I'm wondering how to express a certain function of "actually" in Chinese. Up to now I've always used 其实。But I'm not sure this is right for what I want to express. 

How would you translate this: A: 北京冬天天气冷不冷? B: Well, actually I went to Beijing last year and it was very cold. 

Would you say: 其实，去年我去了北京，太冷啊！

Thanks very much in advance, I would really love to know the answer to this!
It is true that a lot of words in an English conversation such as 'basically', 'well...', 'actually' don't have good one-to-one translation mappings to the Chinese language. 其实has a negating connotation to the context you are trying to convey. I am going to give it a shot and say, here 'actually' could be replaced by 'in fact', which then can be translated to '实际上'.

The whole sentence would now read: ‘实际上，我去年去了北京，很冷啊！’