A recent study placed Madrid 7th among 36 cities as an attractive base for business.  It was placed third in terms of availability of office space, and fifth for easy of access to markets, availability of qualified staff, mobility within the city, and quality of life. Its less favourable characteristics were seen as pollution, languages spoken, and political environment. Another ranking of European cities placed Madrid 5th among 25 cities (behind Berlin, London, Paris and Frankfurt), being rated favourably on economic factors and the labour market as well as transport and communication.