The flat Alexandre provided us with was in a good location to discover Lisbon from, it's central and the metro is just a few steps away. The check-in was explained well. The small kitchen has many accommodations but is missing some basic stuff like oil, spices etc.
Regarding the cleanliness: the apartment was thoroughly cleaned, we could have ignored the one long black hair in the shower and the few moths, but there is a general problem regarding mold in the apartment. One of the bathroom walls was covered in black mold which explains the smell mentioned in other reviews. Just be aware of this fact in case you have asthma or allergies.