The communication with Diogo was the best that we have ever expierience while booking with Airbnb. He is really attentive and responds quickly.
The place is everything that Diogo and Christiana describe it to be (don't be afraid that you will run out of the hot water - it was really fine having the boiler for 2 people - we never run out while showering, etc.).
It is in a great, calm spot, really close to the metro station coming from the airport and - what's great for those who, as us, arrive late at night and have to catch a plane really early in the morning - you can self check in and out. There are a lot of caffes and restaurants around (and also you can find Diogo's recommendation booklet in the room).
The turistic spots are just a walk from the appartment and you can enjoy them still staying in a quiet place without all the noisy chatter. We really recommend those hosts and their place.