I definitely recommend staying at Luisa’s apartment. It had everything we needed! We enjoyed the spacious living space and the bedrooms had lots of clothing storage.
The location is perfect as it is just steps away from the liveliness of the city. I wear ear plugs at night anyway, but my friend did not have any complaints for noise as we were on a side street. I would note that the location of the apartment is up (or down) a steep hill (a lot of Lisbon is hilly). It is accessible by car and there is only a half flight of stairs to climb before you enter the flat. The flat is all on one floor and the kitchen is fully stocked.
The weather wasn’t too warm so we did great with only having floor fans but if you plan on visiting mid-summer, you may want to plan accordingly!
Again, great apartment and great location!! The host has great communication :)