Translation of interesado

We arrived at my Casa, a private home with an extra place that the family rented. I sat down and they gave me a drink. They explained me that they wanted me to stay at another house for some reason.
In addition, after the tests I would like to give also a presentation to some of the teachers, as usually the different ideas come with the presentation. After speaking with them, some ideas emerge...
We checked in, took a refreshing hot shower and were really happy about our accommodation. As it was late, we took another ride to some restaurant. When we payed the driver he told us that he had no change.