Pictures are extremely accurate, and the location is very much where you would want to be if you're a first or second-time visitor to Lisbon. Once you know the city, you may wish to stay in a location of your personal selection that better reflects your taste, such as Alfama if you're into fado music.
Otherwise, this is an excellent choice as it is, as the description says, very close to numerous restaurants, both trendy and inexpensive. The "Time Out" marketplace is literally across the street from two of the highest-rated steakhouses in Lisbon, so your choices are all across the spectrum.
Uber and taxi service is on-the-spot, and you are about 100 meters from one of the better rail stops, providing access to all of Portugal. Otherwise, you're about a 15 minute walk into the normal city center, where the aggregation of tourists will be, or 10 minutes up to Chiado or Bairro Alto, where the hardier (because they've climbed the hills) tourists will be poking around the narrow streets.
The apartment is large and roomy and well-maintained. All of the equipment works and if you have any ideas the management will immediately respond. In fact, management is one of the strong-points with respect to this particular rental - you will not find any better at any other location.