Excellent location, close to bars, restaurants, shops, landmarks etc. The longer we stayed the more we realized that the location was really perfect for a short break in Lisbon.
The company that manages this place has dozens of listings and seemed very organized. (It's very "corporate" - you're dealing with a large company not a local homeowner, though that wasn't a surprise and not a problem for me on this trip). Communication was good and check-in was easy, plus they have maps and recommendations if you need them.
Our family of 4 was very comfortable - we could have squeezed another 2 people in without much problem - lots of space. Amenities were generally very good - wifi was super fast, plenty hot water - they provided a few toiletries (although very little toilet paper which isn't something I want to go shopping for when I am on vacation!). If you're staying for a while and planning to cook there you'll need to buy basics like salt, pepper, etc as they clear out the cupboards and fridge after every guest.
I really liked it, but didn't love it and still not sure why. The bathroom could do with an upgrade, especially the shower area. Living room smelt a bit weird the whole time we were there. So inside was good but not great for the price, location was outstanding.