# Sit 'n Sleep > Spacious, well-lit store offers a wide selection of mattresses with a relaxed, non-pressure atmosphere. Knowledgeable staff provide friendly, professional service and help customers find the right fit. Delivery is typically quick and smooth, with options to haul away old mattresses. Source: https://www.atly.com/location/Sit-'n-Sleep31 - Address: 990 Ontario Mills Dr Suite F, Ontario, California, United States - Phone: +19095278691 - Website: https://www.sitnsleep.com/store/ontario-mattress-store/?utm_source=local&utm_medium=organic&utm_content=gmb ## What it is good for - Comfortable — 8.5/10 - Kid Friendly — 8.3/10 - Sleep — 7.5/10 - Delivery — 6.3/10 ## What people say - "They helped me find the perfect mattress for a comfortable sleep." - "John was so kid-friendly and patient with my toddler." - "Delivery was quick and they even set it up." ## Good to know - Delivery is scheduled within a four-hour window, typically as soon as the next day. - They take away your old mattress at no extra charge. - Expect delivery within two days for most orders. - The return policy is strict, especially for non-bed items like pillows. - Customer service can be difficult to reach, as it's not through the store. ## 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.