I was supposed to stay there for 4 months, it ended up to be more than 1 year! I really appreciated the un-bureaucratic terms of the contracts: you do not have to deal with contracts, bills, etc... and you can plan your expenses in advance. The apartment is very cosy, especially during the winter season, and fully furnished and equipped. The neighbourhood is wonderful (I still miss it sometimes!), close to the EU institutions, in a wonderful and very quiet residential area (but during the matches of the Spanish national team during the World Cup, you will understand why...!). The landlady is helpful and discret and you do not need to face the formalities (and problems sometimes) of agencies, intermediaries, etc... I would recommend it.