Which word would you use to describe the amount of sugar in a cup?

How do you ask for things at a hotel (i.e. towel, information, wifi...) 

Can I have (item), please?   Example: Can I have an extra towel, please?

Give me (item), please.  Example: Give me an extra towel, please. 

I want (item), please. Example:, I want a glass of water, please. 

I would like (item), please.  Example: I would like a class of water, please

How do you ask for the location of a place?

Where is (location)? Example: Where is the train station?

How I arrive to (location) Example: How I arrive to the train station? 

Pick the correct verb for 3rd person singular (present simple) 

There are ___ people here.