I stayed at Tiago's place for almost 6 weeks. The place is great for an extened business trip or for travelling and has all the amenities you could ask for. Frequent and fast communication by Tiago and Ana make you feel welcome and there is nothing that's lacking. The view is amazing, as is waking up to the sunrise every morning. Surprisingly, the apartment is one of the quietest I've been to in Lisbon since it has proper windows and isolation. The only smaller downside is the fact that the apartment is not the most modern and some appliances are somewhat worn down. This shouldn't interfere with your overall experience though. Highly recommended!