This apartment was very central - close to restaurants, grocery stores, shopping, the metro and sights - which was amazing! However, that great central location also meant that the street below (the apt is on the first floor) was usually filled with a fair amount of noise - some days until 2 or 3 in the morning. The shutters worked well, but you may also need some earplugs.
Hussene was super responsive and communicated things very clearly. He was able to modify his schedule to meet me at the apartment, even though I arrived 3 hours late. He resolved an issue I had with the TV and tried multiple times to get the washing machine working (ultimately the repair person was arriving the day after I left).
Just a heads up, there are enough kitchen supplies (pots, plates) for basic meals, but don't plan on doing any multi-pot extravaganza's. And if you're on a budget, the Pingo is by far the most reasonably priced grocery store in the neighbourhood - but don't forget to buy some fruits/veggies from the local merchants too.
All in all, a perfect set up for a single or couple looking to be in central Lisbon, close to the action.