The location is very good (central, in a pedestrian zone). The apartment is quiet and clean. The pictures describe it quite precisely. Check in and check out are easy as there is a concierge desk 24/7 in the house, meaning it’s more like a hotel. You won’t be able to leave your luggage there however, but there are lockers at Estation del Norte (10 min walk from the apartment). The nearest metro station is Colon with direct connection to the airport. The apartment is comfortable, just some basics like salt, pepper and oil would be nice to have there so you don’t have to buy each time new. A well sorted supermarket is a 5 minute walk away (Mercadona).