I stayed in this apartment for over a month and I would definitely return next time I come to Madrid:
- the wifi was strong for remote working (video calls, etc)
- the location is unbeatable
- very comfortable bed & well equipped kitchen
- the staff are super accommodating & always available to communicate
- overall, great value
The only thing that I had trouble with is the separate, off-Airbnb check in that you must complete (the listing mentions it). It took me a bit of time, but the staff walked me through and were very nice about helping me understand it.