We’ve been to Caesarea, Haifa and Akko numerous times, but have always done things our way. Last year we were Israel National Trail hikers and passed through Caesarea. As far as Spot Hostel tours? I don’t know. We didn’t do a tour. It’s a great place to stay and they are a wealth of information at their reception counter.

I think that the train from airport to HaHagana Railway Station and then change to bus to Dizengoff/Ben Yehuda is not bad option. You can find connection in google maps. The price for train is about 13 NIS and for the bus about 6 NIS. I don´t remeber exactly. I hope it helps. Good luck.