Even if you have a 3 day weekend, you still need to have proper long blocks off work. I used to take days off on Friday or Monday to get longer weekends in lieu of taking whole weeks. It's nice to have a long weekend but I found since taking more longer blocks (week or more) it's a lot better for you to fully switch off work (usually takes a few days to switch off completely).
It's sometimes nice to have 3, 4, or even just 2 1/2 day weekends if you want to go somewhere for a weekend trip. Which I do sometimes. But unless I have specific plans for the weekend, I'd rather have any days in excess of the usual two available for use for longer trips.
People obviously vary. I've worked with people who didn't have any particular trouble taking time off but they just didn't like travel and preferred just expanded weekends. For myself, I'd rather have most of the time for longer trips with just some longer weekends here and there.
