This was okay.
Jay and Boba were both friendly and open, and the apartment featured plenty of notes with recommendations on what to do around the area.
However, on our initial arrival we were unable to get in (no answer at the buzzer and with US phones we had no service, though we'd communicated our approximate arrival time.
The space itself has a few drawbacks. The bed sags in the middle, and with two of us that wasn't the most comfortable (maybe one night but we stayed 5). The shower has about 2 minutes of hot water, and the toilet seat came off very easily (we fixed that ourselves). The couch was also extremely uncomfortable, but that's not a serious issue and so I removed no stars for it. While staying in Madrid isn't about hanging out in your Airbnb, the comfort level never really made that an option.
Personality-wise, Jay and Boba were lovely hosts and keen to give us the information we needed, but I'm afraid the space was not up to what we needed in some important ways. Overall a mixed impression.