Booking, communication is easy, the apartment is a really nice space (we were 2 friends staying in one bedroom each) in the best possible spot in town.
Towels etc. are very well taken care of, everything that should work works.
Very nice that you never need a key, just to put the codes in your phone / memorize them.
Little super markets and millions of restaurants starting when you open the door.
Bus stop at a 2 minute walk, that will get you to the trains (20 mins walk, will take you to places like Sintra, Belem or the beach) . We loved to step (download the Bolt or Bird app!). Alfama is the nicest and coziest area of all and this place matches that.
All the great things are already described by many other reviewers and agreed with.
Little sidenotes that are good to know; the upstairs neighbours seem to like walking around on wooden shoes during each night (2300 and much later) and early mornings (6 o'clockish for sure). Bring earplugs for that (closing all windows is not enough unless you suffer from ear damage) . Also because of the location: there is music (and more "noise") every evening but friday+weekends it does NOT get quiet (in the streets all around the apartment) until waaaayyyyyy after midnight (2 or 3 o'clock?) for sure.
The apartment and the location ARE worth that, but it is good to know.
I found the single beds hard. If your body is in top shape; it's a good bed. If your back / shoulder may hurt/ be stiff....the bed's a bit tough / too solid in my opinion.
Welcoming wine&food basket is like a mini fridge...anything you take from it, you pay for.
Suntransfers to get you to this place and back to the airport is very good service for a friendly price.