Cristina was the perfect host and her apartment is really lovely. It's very well located, surrounded by great restaurants and bars. The street can be noisy at night but with all of the bedrooms at the back of the apartment we didn't find this to be an issue at all.
The apartment is very spacious and has everything that you could possibly need. We were made to feel very welcome and Cristina was very accommodating, allowing us to check-in late and also check-out late, which was suited our flights into and out of Lisbon. We very much appreciated this flexibility.
I would certainly recommend Cristina's apartment, especially to groups or families as it's not always easy to find such a great space that will comfortably accommodate more than four people.