We had a great stay at Iñigo's place! The location is very central. We were able to walk everywhere we needed; walking distance to Sol, Gran Via, Retiro, shopping, restaurants. It's very convenient to go to the airport too (Train C1 from Recoletos or bus from Cibeles). We enjoyed the views from the apartment onto the plaza. The plaza can be loud, but that's central Madrid life. The wifi was great and there are two areas for working. Iñigo was very helpful and responsive over messaging.