Excellent stay! The apartment was amazing, perfect for a solo traveler or a couple, the location is great: inside a residential building, in the heart of the modern city, with bus, metro, restaurants, parks, museums not far... Very easy to reach the river or any other places thanks to the metro (it's on the same line as the airport so easy sailing from and to there). I felt like a local, going downstairs for my coffee and pastel de nata in the morning with people all around me speaking Portuguese. Gustavo met me in person for the check-in (though I had to message him to meet up so you do need an Internet connection, arrange in advance if you don't), he was very flexible, friendly, and always available to answer my messages for any question, so perfect communication there. Only downsides I would say were the street that I could hear from the bedroom (but it's mainly ok during the night since there's much less traffic) - bring your earplugs if you're sensitive to that; and a few patches where it wasn't so well cleaned, but overall still very good. Highly recommended!