Isabel's apartment is modern, clean, and very well located close to the river. The building is very old but the apartment has been newly renovated and is extremely comfortable! We didn't get to meet Isabel, but she did arrange for her brother Andre to pick us up from the airport, and for only 20€ that was cheaper than a cab and way more convenient than the metro which runs very infrequently. Andre was also a fantastic tour guide, pointing out sights and sites along the way, allowing us to get our bearings before we were even unpacked. He gave us the keys and showed us how the apartment worked. Great! The only downside of this apartment was that the neighbourhood is deserted after dark so walking around (especially alone) is a bit eerie. Overall, definitely recommend!