The only three minor things I can fault the hotel on are: (1) The double hotel room we had may have been a little small in some other peoples opinion, with room for a double bed, two bedside cabinets, a wardrobe and one chair. We considered it fine for the five days we were there, with an ensuite toilet, bidet, shower and bath. (2) The WIFI signal strength was not uniformly strong in all parts of the bedroom, but we found it adequate for occasional use (checking flights, looking at attractions in the area, transport links, etc) and it was free. (3) Other people walking along the corridor outside the room could be heard, which on occasion was quite early in the morning with roll-along suitcases (people checking out for an early flight). Luckily, the other guests were quite considerate when walking by later at night. Also note, no breakfast was provided when we stayed (which was fine with us, as an amazing pastry shop was a few doors away!).
The hotel room (and hotel itself) was very clean, with towels and toiletries supplied (and re-supplied on a daily basis). The hotel staff were all friendly and very helpful, suggesting places to visit in the area when prompted. The hotel is three or four doors down from one of the most celebrated pastry shops in Lisbon! (as evident by the constant queue outside the shop at all times of the day). Great for morning breakfast or a late night snack! The hotel is located in a very nice, quiet area (no local pubs), close to many museums, the tower of Belem, monument of the discoveries and the monastery (note: all of these were closed on Mondays when we went). The travel links are good too, with a short 15 minute tram ride (on the old or modern yellow no. 15 tram) and close to the train line from Lisbon to Estoril and Cascais. Public transport to the hotel from the airport involves either two buses or two trains. Overall, perfect for a short stay.