My boyfriend and I had so much pleasure and fun to be in Ellie's location. All accommodations are there even some games and also books about Lisbon.
She explained us how work every little things in the flat, she lives just upstairs so in case of trouble she's here. That's a very good point!
The location is as it looks like in photos, even better and very functional with all public transports around (tram at 5min and metro at 10min) and there are also supermarkets open until late.
Plus, even if our check-out was supposed to be at 12noon, she let us store our luggages to collect them just before our flight.
I recommend this location with no hesitation and I'll probably come back in this one if I'm in Lisbon again.