I was last in Grenada/St. Vinnie's in 1999--so let me tell you a little bit about housing in Grenada.
There are 2 campuses--True Blue and Grande Anse. Grande Anse is the older campus, and from what I have been told is not used that much anymore for the med students...I think that the pre-med students are housed there. Having said that, I did live there my 1st term. It is right on the beach, and the rooms are a decent size, each with its own bathroom and balcony. I think that you are more likely to be placed at True Blue. There are two sections of True Blue--upper and lower. Lower True Blue was supposed to be torn down--but, things sometimes go slowly. You want to be on upper True Blue. There are all kinds of housing options available, including married housing. Be warned though...married housing is small...it is essentially a small studio with a kitchen. Other housing options are 6-person suites (three bedrooms, three bathrooms, with kitchen and washer/dryer), 5-person suites (5 bedrooms, 5 bathrooms, kitchen, washer/dryer, balcony--I lived in one of these suites for 2 terms, and I loved it...they were brand new and beautiful), 4-person suites (4 bedrooms and bathrooms, kitchen); of course, there are singles and doubles (both of which are studios)...also, when I left the school was in the process of building more dorms on Upper True Blue...so there may be even more options available to you. The woman in charge of housing down there is Dawm Buckmire. Call the school and ask if there is any way for you to get in touch with her.
Also, you have off-campus options. I lived off campus for 1 term as well...it is well worth it if you are married.
Best of luck!