I got to see lots of Tel Aviv. I traveled almost everywhere on foot, because I wanted to really see the city and build a mental map of the place. Didn't do much touristy stuff but got to see a lot of the city - Tel Aviv is not very big, and flat, so it's extremely walkable. You can get almost anyplace in the city within an hour or two on foot.
Visited Jerusalem four times. It meant a 45-minute walk from my hotel, down Ben Yehuda and Allenby, to the Tachana Merkazit (main bus station), then a 1-hour trip on the 405 to Jerusalem. From there, you can walk down Jaffa Street to the Old City.