The flat itself is really nice and cosy and it was very clean. The location it good. It is relatively close the the city centre and directly at the Santos station. However the next Metro station is almost 30min walking away. Also the next bigger supermarket is around 15min walking away.
For the flat we received two pairs of keys, which is excellent when you want to go out separately sometimes.
One thing you need to know is that there are two night clubs in the same buildung (ground floor). Although the flat is in the 3rd floor, it is relatively noisy at night until 6am for 4-5 days per week, especially because the windows aren't well sealed. That's something you need to know and when you are noise-sensitive, better look for a different place (or make sure you have earplugs with you ;-) )
We also had some issues with internet and electricity, that however could be solved within minutes as the communication with the landlord is excellent.
All in all we had a very good time in Lisbon. Thank you very much for giving us the chance to stay in your flat.