We had a wonderful experience staying at Christian's place.
Upfront we got a detailed e-mail with all the information about the apartment, also stating that the taxi to the apartment should be about 15 euro. However, our taxi was 45 euro's instead. We called Christian on arrival and he immediately went outside to the taxi driver, helped us and we paid 15 euro's in the end.
During check-in he gave us a lot of tips regarding the metro, train, supermarkets, restaurants etc.
The apartment was really nice, clean and exactly like we expected. The photo's give a really good impression. The beds were really comfortable and there's even a small balcony! This was definitely the best apartment I ever stayed in.
The location was also really good. Lots of local restaurants within 100 meters and it was really quiet during the night. It's about 5mins to the nearest supermarket and 15mins walking to the metro (Cais do Sodré).
The only "issue" we had was with the powersupply. If we turned on 2 zones (on the stove) or 1 zone and the oven, the power would drop. We texted Christian and he said it's something that will be looked at.