Just put your staying one day and use the airport hotel address. Could actually come in handy if you get stuck overnight. I will mention if you have checked bags there could be a issue I did not think about but occurred on my last return. We were booked on intercarribean from EIS to SJU. They left every checked bag in Tortola for weight. We were not informed until arrival in SJU. No big deal as we were on one ticket. We simply put a bag claim in with American on arrival in Charlotte. The bags arrived a few days later. There were about a dozen travelers on separate tickets who were in a heated argument with the airline rep. He told them they would deliver there bags on SJU that evening but was not offering to get them to the US. I have no idea the resolution as we bolted to catch our flight as they were also late.
G