Me and my best friend spent five nights in Elsa's and Rui's apartment and it was perfect. It has everything that you need and a fantastic location, in Alafama, the oldest district of Lisbon which is very impressive. From there you can walk almost everywhere by foot which is the best way to see as much as possible of this fantastic city.
Elsa and Rui are very helpful and organized everything perfectly. We where picked from the airport and they gave us some great tips about places, restaurants etc. in Lisbon. If you want they will even call you a taxi to the airport when you leave again. The idea with the pocket wifi is a great. You can stay connected with friends and family even if you are not in the apartment.
We had a really great time in Lisbon and we strongly recommend this apartment. Thank you for everything Elsa and Rui!