Charito,
These words depend on where the Speaker and Listener are situated.
"The Chambermaid will send the towels to your room". The Speaker is PROBABLY not in the room, but the Listener PROBABLY is in the room. The Chambermaid will give instructions to someone, who will deliver (take) the towels to the room. "Send" implies, first "away" from the Speaker, second "towards" the Listener.
"The Chambermaid will bring the towels to your room". The Speaker is POSSIBLY in the room, and the Listener is PROBABLY in the room. The Chambermaid will personally carry the towels, herself, into the room. "Bring" implies, first "towards" the Listener, second "away" from the Speaker.
If I "send" something, it goes away from "me", alone, to another place.
If I "bring" something, it comes with "me", to my place, where I live.
"The Chambermaid will deliver the towels to your room". There is no reference to where Speaker and Listener are, but they are both probably at the Reception Desk, not in the room. "Deliver" is very similar (in this context) to "bring", so the Chambermaid will carry the towels to the room. However, it could imply that the Chambermaid will give orders for someone else to bring the towels to the room, (similar to a postman "delivering" a letter).
"I hope that you can visit Peru".
I want you to come, I will be glad if you come, (but I do not know if it is possible). My heart says: "Please come! but I realise that it may not be possible, and I will be sad".
"I expect that you can visit Peru". You have the time, the money, the wish to come to Peru. It is probable (but not absolutely certain) that you will come. My brain says: "I will expect you, I will make arrangements to greet you and I will wait for you, (because I think that you can come), on the First of December, 2010. If you do not come, I will be surprised".
I hope that this helps you, (but I am not certain that it will!)
Les
