Well, Rotterdam is very near Amsterdam, and is a very nice city, although there isn't that much to see there. It is the longest harbour in the world, so you can take boat tours down that. Also, the euromast is there, which offers a wicked view over the city, especially in the morning or evening, with the sunset/rise. Locals in Rotterdam can usually speak English, and suprisingly very well. Also, if you plan to go to Amsterdam, staying in Rotterdam may be an idea, because it might be cheaper to stay there and just go to AMsterdam for thenday then stay in Amsterdam.

Achetez des chaussure la bas j'ai jamais vue autant de magasin de chaussure au meme endroit et si peu chère

Rottendam is easy to access by train. Hotels are in the city centre and around the train station. We found the Hilton Hotel was the best price, best location in the city mall area next to restaurants and shops. The needle down near the biggest shipping harbour in the world was offers an interesting view. Only stayed one night but saw enough. Clean city and seemed quiet safe as well.