I think this is the best place to choose in Lisbon if you don't want to waste your energy lifting your luggages.
The main reason is "the Lift". There are tons of places without a single lift inside the apartment. I understand because most of them are built in regency. But you'll crave for the lift if you're with luggages. Thanks God this place has a lift. And it's absolutely sufficient for the big-sized luggages! I strongly recommend for people with heavy items.
Second reason is safety and private. It is nearly impossible to find the exact place if you don't have an instruction. That means it's super safe for you to stay. Nuno will guide you the way you can catch a cab, go outside, etc, so unless you struggle to find the direction, it won't be a problem.
Facilities are great! They have nearly everything inside, so it'll feel like a home. It's good to cook inside, but be aware of smoke alarm! If you don't turn on the ventilation, the alarm will ring.
Overall, this is a great place!