Really nice and clean apartment at an excellent location. Communication can sometimes be somewhat lacking due to the many employees who pick up telephone calls. When we left our keys inside the apartment when we left in the morning (stupid, but a human mistake) we called the host immediately, we got redirected by all different employees and didn’t get a good solution untill 7 in the evening (after already travelling >1 hours to pick up our keys somewhere and finding out they were not there). Finally back in our apartment we found out they had already entered without contacting us ever that day. We had a short weekend in Porto, and this caused us to miss a full day of doing what we wanted. This could definitely be improved.