Pat's apartment was the perfect stay for our family of three (travelling with our student son). It was exactly as the pictures and if anything a bit more spacious than what we expected.
Pat was a really good host - very friendly and helpful and with excellent communication!
We really liked the location. We took the train from the airport and it stopped pretty much accross the street from the apartment. It also offers a metro station with access just a few meters from the building and a direct line to the city centre (Puerta del Sol). But even nicer was the short walk required to get to the magnificent Retiro park, where you want to spend some time in the summer (especially weekends).
There was a large supermarket just a 5min walk away.
The WiFi worked perfectly well all the time - with no interruptions. I could video conference with ease and we could stream movies seamlessly. I did a speed check and it maxed out (i.e. connection speed was in excess of 250Mb/s).
As for noise: The apartment is on a busy traffic street and hence you always hear traffic noise - but no restaurant or bar or club noise and also the traffic noise is limited to the living area. The bedrooms are much deeper into the building (away from the street) and ours was super quiet and dark at night (given insulated windows and external blinds) and since we were also using a small fan in the room we never had any disturbing noises at all in 4 nights that included a weekend and we slept really really well.
All and all a wonderful stay and should we ever get a chance to return to Madrid, we will immediately check if Pat's apartment is available.