Carlos is the perfect host. My girlfriend and I stayed with him for 3 nights and we couldn’t have been happier. He’s friendly, funny, and really welcoming. Every morning there was a nice breakfast waiting for us, and one of the nights he even invited us to dinner with his friends (it was delicious) and we all went to a music festival afterward. The apartment’s neighborhood is also great if you’re looking to stay in a more local/less touristy part of Lisbon. I really recommend him!