Recently we were in Porto. Went to the Travelers Info office to check on HOHO tours. The yellow bus was the only line they sold even though there are a blue and a red tour. We purchased a 2 day pass that included a port tasting and 50 minute Duoro River cruise. The first bus we got on was in terrible shape, none of the recordings worked so had no idea what we were looking at. Sometimes the bus did not stop even though there were people waiting at the stop and looked upset that the bus kept going. When we got off at the stop for the river cruise there was no indication where we should go to pick up the boat. Since the recording system didn’t work we were on our own, walked over a mile to find the boat. They do not announce what stop was coming up so missed our stop a few times. It appeared the driver was just trying to get thru the route as fast as possible and was no help.