I disagree with person before me. Although the review very well explains the film, and I got the feeling that the film was liked, it was still given only 2 stars.
I, on the other hand, found this film very romantic and beautifully shot, the acting is really good! The film is full of surprises and you never know what next page of their correspondence is going to bring you. You can feel their love, their joy and their pain... This film is one of the rare ones that make you feel like you in there with them, it's open but intimate enough...
The feeling that they share, being single and lonely and of alike minds, I wish I had a soulmate like that somewhere, even if 2 years apart...
It reminded me "Sweet November" and "City of Angels", got the same feeling to it... Love story with sadness to it, and impossibility being together... Although in Lake House they got together in the end, and I'm so happy for them.
If you like that kind of film, you will definitely love this one, I highly recommend it!