We had a short stay in Lissabon. The appartment was really clean and nicely decorated. The metro station is just around the corner, which is great.
For the light sleeper, there might be a bit much noise outside (that's what you get in a big city ;) ). Sofia and Jorge were really helpful, although we haven't met them in person. Their e-mails and the tips left in the room were great!
The shower is a bit on the smaller side, so if you're taller/bigger it might be a bit uncomfortable. But all in all a really nice appartment!