Alex's place is great for a group or family traveling together that do not need luxury. It's comfortable and mostly what you'd expect out of a self-managed AirBnB. If you're looking for something a bit more luxurious, I'd recommend checking out a managed apartment instead.
There were a few quirks of the apartments like loose door handles, a window that did not want to open (we were here when it was 26 degrees), and the water heater breaking during our stay. All of this is fine but it depends on your expectations. For the price and size, it's perfect.
Do know, it's about a 12 minute hike up the hill from the Sao Bento stop but if you have luggage, that hike can be brutal. We had a baby and most of the time, we decided to take an Uber home for cheap.