Haven Burgers is a friendly sandwich shop in central Mesa. I've only been there once, so I'll try to add details about my personal experience.
When I find a new sandwich shop, I always order a Pastrami sandwich. Doesn't matter if it's hot or cold, just as long as it's Pastrami. Haven Burgers happened to have a Pastrami and it drew me in.
Haven Burgers service is rather quick which I was pleased about and the sandwich came out all nice and cut in half (the way I like it).
I drove home and unwrapped my sandwich and began devouring it. However, if you know me, I'm not a fan of soggy bread. Soggy bread is the worst thing ever and this sandwich, while good and tasty with quality Pastrami, had soggy bread. I'll forgive Haven Burgers for this misfortune by stating I drove home ( a good 10-15 minute drive) therefore giving time for condensation to build up in the wrapping. However, the soggy bread still deducts 1 star. I originally would have deducted 2 stars for soggy bread but the cause of it may have been my fault.
Once the construction on Main is lesser than its current state, I will return to this restaurant and attempt again at finding my Pastrami sandwich.
I'm not sure if I would recommend this place, but we'll say yes because I love local eateries and always try to support good food when I find it.