Sivio's place pretty much is as described. it is close to walk to most of the major venues, including the waterfront. However, it will be an uphill walk from most places back to the apartment, but you can easily hail an Uber or a taxi for a pretty inexpensive ride. Lots of restaurants within 10 minutes or less.
The apartment itself is modern and well appointed, including a small kitchen if you are inclined to cook. There is a washer/dryer in the apartment as well. It would be a little tight for more than two people, but perfectly fine for a couple. The apartment is located on a quiet street, but only minutes from shopping and restaurants. It does have an elevator if you have lots of luggage or don't like climbing stairs. The apartment was spotless.
Communications with Silvio was very good with special mention to his co-host, Adrianna, who provided us with awesome local suggestions in terms of restaurants, directions, etc. I would recommend Silvio's place without reservation.