The best way to characterize this comedy is through the fact that it does not really stand out through anything. You have the classical quid-pro-quo from which all the funny situations derive and there are of course all stereotypical characters, everything culminating in a stereotypical ending.
The idea of love at first sight is hardly believable in reality and the film doesn't make it any more credible unfortunately, but we are talking about a comedy, so credibility is not necessarily a prerequisite for making the movie funny. The problem is that at times it tries too hard to be funny, making things seem totally unnatural, thus achieving the opposite effect.
On the positive side however, splitting the movie in 2 different stories adds variety and dynamic, avoiding a story which would drag on for too long and become boring. Despite its limitations, I must confess I did not feel all that frustrated and the movie managed to deliver some laughs.
Bottom line, if you watch it without having high hopes you can find it fairly enjoyable, but there are definitely much better Italian comedies out there.