We've been to Javier's place for one month, the apartment is beautiful, just like the pictures, just one detail: it's technically located in Retiro neighbourhod not Salamanca, anyway the location is awesome, very safe, with a lot of places to Eat and drink and just a few blocks from the Retiro's Park. Everythig was perfect. Javier may be a little complicated to contact but we didn't need him in the whole stay. The building is very quiet and everybody is so friendly, we've spent a amazing time in Madrid, thanks!