what can be done with the following data?
I think you're looking at it the wrong way. First, you need to have a question and then you may find out whether the data could potentially hold the answer to that question. Right now, you're asking us to what questions this data may hold the answer. And that is a very difficult question!

But to provide you with at least some ideas:


Find out what people deem important (the correlation between overall rating and the other ratings in (linear) regression analyses)
Find out the relation between certain characteristics of people (age/gender/nationality, if available) and their overall rating (or whatever rating available)


Basically, the relation between certain variables and their outcomes. But make sure you have a clear question before you start looking for answers.