If you jump to 1:36-1:37 in the video, then look down south-east from the jungle, and there's first 2 huge forest biomes there, colored mint-green, and then extreme hills with more flower forest on the other side. I can't remember visiting it, but I can only guess it must be some wonderful places to see there, with waterful coming down from the moutains and the flowers everywhere.
Personally I find 0,0 to be a reasonable place to start. At the bay where you spawn, there's a little island where turtles visit and seagrass grow around it, so you can trap a couple inside a small hut and then make a Turtle Shell from the Scute that drops with all the babies you can produce. I think the Turtle Shell is equal to diamond helmet, and gives you good capabilities to stay below water and to gather treasures. You are close to a couple of villages, close to temples, close to horses, close to all farm animals, all veggies from villages, right next to some extreme hills where you can build some railroads down to level 6 or 9 and drain it for both diamonds and get emeralds at the same time. Outside the desert-part of the spawn, there's several caves where you can get armor, shield, weapon and tools, and if you decide to build base there, you'll get lots of XP since 4 types of zombies will visit you and 2 types of skeletons. Also close to the sea, where you can travel around both the one to the north, and get to visit dozens of biomes, and also take a boat to the ocean south.
The best thing about starting at a desert spawn for me though, is that there's a few blocks of green grass near the turtle island, and if you have a couple of stacks of dirt and seedlings and flowers, then you can make a garden/oasis that look incredible lush in the bleak desert enviroment. Sometimes I've connected dirt to grass several hundreds of block away to enjoy the strange sight of a blooming desert. You might be lucky and spread grass faster if you kill ender men holding grass blocks.
Remember if you are going for the Advernturer achivement, then in each herd of horses, there's some slow, some with high health, some with high jumps, but only 1 that got all 3 of these.
If you stay away from main base at long time at once, then it's a wise decicion to tame a bunch of Llamas, and put a lead on one of them, and also different colored rugs if you want a cool sight, along with a chest on each (shift-click) Then the leader-Llama will make all the others follow in a nice row, and unlike horses or donkeys or mules being lead by a Lead, the lead to the "Alpha" never break by my experience, and you can probably double your loot.
Unfortunately it's very complicated if you try to get llamas through nether-hubs, but anyway, this is probably the fastest way to get the achivement, and also build up a system where you got access to all biomes.
If you row straight north until land from where you spawn, then head west, you find the mushroom island. Remember to bring wooden bowls if you got inventory space, in the old days Mushroom Soup was the best food one could get. And the Mooshroooms got endless amounts of it. Btw if you bring one of each flower, if't a fast way to discover what soup give you what effect.
I can comfirm that. There's a small patch in the jungle to the south, beside also Jungle M and Jungle Hills, and nearby there's Mesa with Mesa Bryce and off the coast off that is the only frozen ocean I can see on the map.
There's actually 10 types of water biome. Normal ocean ocean, frozen ocean, cold ocean, lukewarm ocean, warm ocean, deep ocean, deep frozen ocean (I might be mistaken here), deep cold ocean, deep lukewarm ocean, but not deep warm ocean. Finallly there's river. All 10 of those are pretty close to spawn.
The only thing I don't like about this map is the lack of large fields of coral nearby. Also I have no clue where the least far away Woodland Mansion is, for those wanting to kill all enemies (but think that's possible with pillagers now,but correct me if i'm wrong, I haven't played since 1.13.2), but I'm sure I can remember a carthographer in one of the villages nearby. I think you only need to grow tons of sugarcane, turn it to paper and sell it for emeralds, and in the end he got map showing where the Mansion is.