Lucky you - its brilliant - hope to get back some time but still loads of other cities to do - we found it really friendly but others have reported it as not being so. Depends who you meet. We found a great cheap but nice restaurant ot far from the Placa del Sol - I think it has Susanna in its name - will try to find it on web but it was several years ago

Believe me that the TB gallery is much better than Prado unless you like older works of art - I'm more into lte 19th & early 20th c - though I love the Bosch in the Prado.