Great apartment on the 6th floor close to Parque Eduardo VII. The apartment is big, very well equipped, modernly furnished and extremely comfortable. We didn't need AC but it was present and working in common spaces and in all rooms (but 1, where there was a fan instead). The neighbourhood is vibrant and very safe to walk at any hour of the day or night.
Marta is a great host and she helped us with all our questions any way she could. Highly recommended for a big group.