We (me and two friends) spent a wonderful 6 weeks at Malena's place. It is in a quiet area of La Latina (my favourite neighbourhood in Madrid), but is still close to the metro, shops and restaurants. It's a very nice apartment and the location is superb - quiet but still central. Ideal for 2-3 people. Malena is a great host, who can help with anything (i.e. finding a cleaner for those that stay in the flat for longer, etc..).