Check-in was very uncomplicated, all we had to do was to tell Luis and Ana, when we arrived. Luis welcomed us, explained everything about the apartment and the surroundings, like where to find grocery stores, recommended restaurants and places to see and was very nice and fun to talk to. We could text him anytime when we had questions and communication was very easy.
The apartment was very clean and tidy. All basic things like kitchen utensils, towels etc. were available and in good quality.
Water from taps and in the shower smells very chlorine heavy, but that's not an issue with the apartment. We experienced that all around Lisbon, so don't be intimidated by that.
Overall a great experience and we definately recommend!