finding locals who would like to talk English with a native speaker

I've heard about the various language programs that offer native English speakers free room and board at nice hotels/resorts in return for their participation in week long or more intensive English speaking classes for local people from the local country who want to learn English quickly. Based on the descriptions and reviews it sounds like literally a lot of talking and for most of the day, not something I'd be interested in personally.
However, I've also heard about opportunities to meet with locals in a more casual setting like a restaurant or café who would love to improve their English skills by chatting with a native speaker. That sounds much more appealing and I wonder if anyone on the forum has participated in anything like this and what's the best way to find out more about this? This is something that wouldn't apply for a relatively short Europe trip but more for a longer, slow travel type trip that hopefully my wife and I will be able to take in a few years from now, when we would have time to do these type of activities. It sounds like a nice way to meet people and help them out in developing their language skills, though of course so many people in Europe already speak English really well.