We had a great time in Mário's place. Mário was a very friendly and welcoming host.
The apartment is comfy, well-equipped and has a fantastic central location to explore Lisbon. It's close to everything. The metro and the Tram 28 are just a stone's throw away.
I highly recommend this place, because it offers everything you need including a kitchen that is very inviting to cook dinner, and a small but lovely balcony that you can have some drinks on.