You can also use subqueries to retrieve previous and next ids as annotations to avoid two extra queries
queryset = ObjetArchi.objects.annotate(
previous_id=ObjetArchi.objects.filter(
id__lt=OuterRef("id"),
).order_by("-id").values("id")[:1],
next_id=ObjetArchi.objects.filter(
id__gt=OuterRef("id"),
).order_by("id").values("id")[:1]
).get(id=pk)