A harmless letter

At a flea market in France, used as a bookmark in a dog-eared book, you find this neatly folded letter.

Curiosity piqued, you decide to investigate.

 Give the name of the hotel followed by the first name of its young wine steward.

Answer format: Pension des retraités Paul

 

Hint: how to begin ? The tool Overpass Turbo is almost indispensable after carefully analyzing all the elements of the letter.