Don't hesitate and just book. Miguel is a great host that keeps you updated till you arrive. Altough I know the city already he gave me some extra tips to consider. The apartment is located in the middle of all the action. Tram line 28 is just around the corner and a big part of the city is with in walking distance. Because the apartment is located in a central place you'll have to understand that it's a bit noisy. We weren't at the apartment all the time, so it wasn't a big problem. We'll book again at Miguel's place when we visit Lisbon!!