The flat is clean and quite comfortable even though it is quite small.
The location is nice and, it is not that noisy. It is close to the metro/train station and, few restaurants and monuments.
The flat is at the top of a quite steep hill (like everything in Lisbon), mind this when preparing your luggage.
You may receive few text messages in Portuguese by the host but the lady taking care of the check-in speaks quite a good English.
There was only a one small additional blanket. When I say small I really mean small: my best guess would be 100x50 cm. It may be annoying if you feel cold easily.