Close to Rossio Metro or train station. Most of the Lisbon attractions are in walking distance or 2-3 metro stops away.
The apartment was exactly like in the pictures. Clean and freshly renowated. Kitchen is well supplied and there is also washmashine. Even in the the most hot days the flat kept cool and comfortable (but there are fans in the room if there is need to use them). The water from faucet was safe to drink. Very fast contact with the owner or someone responsible.
On the downside: the stairs are step and would be hard to climb for example for elderly person (but Lisbon in general is difficult place for someone disabled). But there is a lot of shops around so you can buy heavy items near by.
Few times it was quite loud in the night (it highly depends on your current neighbours).