Spent 2 weeks in the flat and overall it was very nice. Spotless, newly renovated, modern feel, well-equipped kitchen and cosy. The host was helpful and provided a 2nd key and replaced the broken kettle.
With regards to noise, it is a noisy apartment due to the location, ground floor and poor insulation both internally and externally. I recommend ear plugs for sleeping, but however have found this to be necessary for many apartments in Portugal and Spain, in particular in when located in the heart of the city. So it's quite normal!
I would stay again.