We stayed in Oscars flat in the heart of Madrid and it was fabulous! It was very modern but cozy at the same time and the location couldn't have been better. A 2 minute walk from the Sol Metro stop and many other things. Oscar had the whole flat set up for us and even left a few treats too! He was also very helpful for anything else we needed such as places to eat, drink and dance etc... Also places to see! Couldn't have had a better experience, wish we had stayed there longer!