We booked this hotel very last minute for the last night of our break in Lisbon, as we were desperate for a good night's sleep after a terrible few nights in an old apartment. We were so pleased, it was exactly what we needed. The room was quiet and comfortable, and the blackout curtains were great. Mattress on the king size bed was quite firm, but the pillows were better than most you find in hotels. Air conditioning is good. Everything was clean and the room was super spacious. It was the best sleep of my holiday!
Shower and complementary toiletries were wonderful, and the towels were lovely and fluffy.
Location is good if you specifically want to visit things in Parque das Nações, short walk to all the restaurants and Oceanarium, but not as a base for tourist Lisbon stuff. It's a 15 min drive to the airport which is handy.
The only downsides were 1) the bathroom door didn't close properly, 2) one of the elevators didn't seem to be working, which led to a very long wait on the morning we needed to check out.