As la historiadora, I will be out of Madrid for a few days too.
I am available in Madrid for either/both/or of the above options from July 17-23 and then from August 2-21st. Of course, since I will have loads of free time in August-I am up for a few lunches!

If all who are in Madrid could post the available dates, then we can narrow it down.
I'm so excited to have a MM get together! clap