We stayed in Diogo's and Rita's lovely apartment for one week in september. The apartment is great, we really enjoyed our time there. I would absolutely recommend it ! Diogo and Rita are really friendly the communication with them was easy. The metro station is just a few minutes walk away! Unfortunately the toilet flush got broken before we came there so we had to flush manually and the fridge was still full of some leftovers from formers guests.
But all in all, it's a great place to stay for a trip to beautiful Lisbon!! :)