You will enjoy your stay her in central Lisbon. Very walkable area (but be advised there MANY steep streets and lots of steps you will encounter as you move about the area). You are right near the National Guard HQ so lots of military (and security). They change the guard at 11 AM with a big ceremony including a band! Many restaurant choices close by with many outdoor dining areas - Tapas, Italian, Local, Burgers, Asian, etc.
The unit is good size. Has air-conditioning and good wifi. 2 Bedrooms and 2 baths with excellent showers/water pressure. Small clothes washer in the unit. Clothes will spin dry and be damp so you need to creatively hang clothes to dry.
There's a little market very close by for basics (water, milk, fruit, veggies, soft drinks, wine - and we needed laundry detergent and they had a small bottle for
3 EUR!). To get there - leave the unit and take a sharp right - go up the hill - about 60 paces and look to your right. Market is across the street.
Enjoy! Bill T California, USA