We didn't get to see Caroline but Jérôme was very friendly! We had to check in early because our train arrived early in Vienna and Jérôme had no issue at all! He showed us where the cheap eats in Vienna were and where to visit in Vienna. He was very patient when he was explaining the directions. The apartment is right across from the Meidling station (train, subway, and tram), so the transportation was very convenient for us! It's just that the wifi broke on the day we arrived there so we couldn't use it. We were having trouble turning the couch into a bed so we asked for help, and Jérôme's son was kind enough to offer to help us! It was overall a fantastic experience! :)