# Dead Letter No. 9 > Three immersive rooms create unique atmospheres that transport guests to different times and places, including a campsite with a camper and treehouse. Music and a hidden dancefloor add lively energy, while the space feels eclectic and well-designed for mingling or dancing. Source: https://www.atly.com/location/Dead-Letter-No-9 - Address: 63 Grand St, Brooklyn, New York, 11249, US - Hours: Thursday: 05:00 PM - 01:00 AM Friday: 05:00 PM - 02:00 AM Saturday: 02:00 PM - 02:00 AM Sunday: 04:00 PM - 12:00 AM Wednesday: 05:00 PM - 12:00 AM - Website: https://www.deadletterno9.com/ - Google rating: 4.6 (372 reviews) ## What it is good for - Performing Arts — 10/10 - Cool — 10/10 - Unique — 10/10 - Private — 10/10 - Interesting — 10/10 - Curated — 10/10 - Moody — 10/10 - Fun Activities — 9.7/10 - Dancing — 9.2/10 - Bao Buns — 9.2/10 - Nightclub — 9.1/10 - Date Spots — 9/10 - DJ — 9/10 - Bar — 9/10 - Cocktails — 8.8/10 ## What people say - "This bar has such a cool vibe and fun, unique themed rooms." - "The DJ lineups here are always good." - "The moody atmosphere here is beautiful and encourages great conversation." ## Good to know - Customers have reported thefts of jackets and phones during visits. - Reservations are not required, allowing for spontaneous visits. - Guests engage in 90-minute guided sessions with conversation prompts. - Latin Rhythms night is a fun event for bar-hopping. - The Halloween event features a party room with a DJ. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.