I’M GONNA DO MY BEST HERE, but we don’t really have a great map of pretty much anywhere even if we include Legends stuff, but I think you can get a rough idea!
CANON MAP OF TATOOINE (such as it is):
(Larger versions here and here).
It’s really half infographic, so it’s hard to get a sense of distance, scale, or how much empty space there really is, but I think basically Mos Eisley is off to the lower east, Mos Espa is up north, and the Lars farm is reasonably close to Mos Eisley and Anchorhead, while Obi-Wan’s hut is more towards Mos Espa. (Don’t quote me without a source on this part, but I want to say he was about an hour’s ride away from the Lars farm, I think?)
LEGENDS MAP OF TATOOINE:
I’ve done a couple of reference posts about Legends materials for Tatooine (and especially Mos Eisely, since Mos Espa was never really covered), which mostly come from RPG guides, which were the lowest run of “canon” even before, because they pretty much had to make up what they needed for their games, but! The map that’s easier to parse looks generally the same basic layout:
(Larger version on the post or here.)
Mos Espa is up in the norther part, while Mos Eisley and the Lars farm are more in the lower eastern side. Obi-Wan’s hut is closer to Mos Espa again than it is to the Lars family home and the biggest difference is that Jabba’s palace is up towards the northeast instead of the lower southeast. (And yet the sarlacc pit/Great Pit of Carcoon and the site of Anakin’s slaughter of the Tuskens are up towards the northeast on both maps, so idk.)
The above map looks like it mostly reflects the same things, aside from the locations of the sarlacc pit/Pit of Carkoon and Jabba’s palace, so you’re probably good with whatever you choose! :D