We really enjoyed our stay in this apartment. It was very quiet and very central, this is the first airbnb we have stayed in with no noise. I don't think you can get any closer to the harbour while still being in Centro. Really close to a taxi rank and bus stops to take you up to Castillo de Gibralfaro.
The lifts weren't heavily used, so we didn't have to wait long for a lift.
The no-contact entry is very convenient, we don't like to keep people waiting if flights are delayed etc, so in our opinion this is the best option.
Our daughter especially loved the smart TV with Disney+ app.