It takes a lot longer to walk across a street when you have to wait for a walk signal. City streets can be 1.5-2 lane residential streets which you can cross basically on demand, making them equivalent in time to walking on the sidewalk. Based on an average walking pace of 1.33 m/s (3.0 mph), you can cover 40m in 30 seconds.

https://www.google.com/maps/@47.6243731,-122.3250919,18.81z

The blocks in this section of Seattle are ~80m long, so one block takes 60s to walk. The "Mercer on Summit" apartments on this map are within 1/2 block (30s) from 3 restaurants, 2 bars, and 1 small grocery.