This flat was absolutely perfect as the location can't be beat. It's situated in the heart of Lisbon but tucked away enough from busy streets. Check-in was super easy and Teresa met us quickly upon arriving. (We took Uber from the airport.)
The flat is gorgeous and very modern with touches of Portuguese flare. The entire apartment is almost all French doors that open to a walk-around balcony. It's very bright, but there are plenty of shades and curtains for privacy or to blot out the morning sun if you are a late riser.
Teresa provided us with plenty of "live like a local" suggestions and there is also a guest book where others have left must-try restaurants. Stand-outs for us included The Park Bar and A Cevecheria but we also discovered some hidden gems on our own. (The LX Factory is a must see for all things hipster-Lisbon.)
If you like to run there is a run/bike path close by that goes along the water for quite a ways. It would be very easy to log ten or miles on a nice flat and scenic route. Start early as there is no shade and depending on your weather gets warm quickly.
The kitchen has a Nespresso machine and there is a Nespresso store close by if you need extra capsules. (We went through 3 sleeves!)
Be prepared for stairs! If you have bad knees or struggle with lifting your suitcase this could be a problem, otherwise think of it as a mini-workout. The balcony overlooks several restaurants so there is some sounds you may hear related to that, but it quiets down early. Also, noteworthy is the smell of food being prepared -- was not a problem for us.
The shower is to die for. Amazing water pressure.
Overall I would say this is about as perfect as it gets. Extremely happy with our stay and highly recommend this apartment in the charming city of Lisbon.