Ruben's place is very well located, near Monumental metro station and very close to Sagrada Familia. Ruben is a great host, we could leave our luggage at the flat earlier than the check-in, he sent us a list with local restaurants and good bars and he even gave us a little welcoming gift. The only downsides are the noisy street at night if u open the window and the fact that there is no key at the bathroom.