Hi Luís,
your appartement is fantastic. It is very, very clean and quitly. For two person it is perfect. We were there with our son and he sleep very good at the sofabed.
The appartement is nearby Bairro Alto. There are many good restaurant and there you can enjoy the night live.
To all other seightseeing points in the city can you going betwenn 20 and 45 minutes. If you don't want to go, the taxi is cheap.
Louis is very friendly and when you need any help, you can ask him all day. His tips for seightseeing and restaurants are recommendable.
When we would come back to Lissabon, we rent this appartement again.
Torsten