Hey - if you are coming in August, then you will have to get a place soon because
Carnival is in early August and accommodation can get filled up quick.
Here is a realtor that can help with short-term housing. We worked with Jennifer and she was very good. Since you need it for short term, she may be able to help you find a sublet situation.
In terms of students, most of the SGU students will be arriving the second week of August as the term starts August 12th. Third term students will already be here. Victory Bar on the lagoon is a hangout as is the Bananas (right near campus). Prior to the first week of school, there is orientation week for 1st term students and there are tours and other fun things. Also a place to get a cell phone if you need one.