If you want to stay in a hotel close to Loiza, where Ryan's family and some friends have rented vacation homes, your best option for hotels will be the area of Isla Verde. This is going to be really close to the airport and about 8 miles away from the vacation homes. It will also put you about 25 minutes away from all the wedding activities. I found two business type hotels in the area: Howard Johnson Hotel - Islan Verde ($89.25) and Holiday Inn San Juan ($167). These hotels have the basic hotel ammenities and no beach access.
Here's the contact information for all the hotels described above:
Howard Johnson Hotel - Isla Verde
4820 Isla Verde Ave
San Juan, 00979, PR 787-728-1300
Holiday Inn San Juan
8020 Tartak Street
Carolina, 00979, PR787 253-9000
787 253-9007
Let me know if you need more information about any tavel accomodations. I will be more than happy to help answer your questions. :)