Nelson is very accommodating and responds to queries right away. I requested for an early check-in but due to some unfortunate circumstances we ended up arriving at the original scheduled check-in time but still he welcomed us warmly and even helped us with the luggage. His place is perfectly situated at the heart of Madrid. It is close to all tourist spot. There are a lot of restaurants and grocery stores are nearby. The flat is perfectly clean and well organized. There are no ACs but there are electric fans that make the heat bearable. Fresh linens and towels are available. Nelson is considerate enough because I originally booked for three persons but last minute my dad decided to join the trip. I asked Nelson if we need to pay for an additional person but he said no need and its ok. He said he only prepared towels for three but that is totally fine with us.