I definitely recommend Sheraton Lisbon.

We stayed here for 5 nights, after 8 nights at Sheraton Porto. SNA cleared 5 days before check in to an Executive Suite. The suite had a strong perfume smell which caused my to sneeze and she couldn't tolerate. Hotel was able to switch us to a different Executive Suite on the top floor which was very nice. The view from the suite was great, and we could see the bridge and all the way across the river to the large Christ Redeemer Statue on the other side. There was a complementary half bottle of Royal Oporto 10 yr old Tawny Port which was nice. Large bottle of mineral water and sparking water was replenished each day. The hotel was fully staffed, and everyone we interacted with was friendly and helpful.

I like the Lounge set up since we could get drinks at the Lobby Bar all day, beer and wine until 11 PM. Happy Hour was 5-7 PM, early enough that we could have Happy Hour appetizers before going out to dinner.

Hotel is located in a wealthy neighborhood of Lisbon with nice restaurants in the side streets not far from the hotel. It was a short easy walk to Avenida Liberdade to watch the St. Anthony Day parade.