Can I use a letter from a friend instead of a hotel booking for a tourist visa in Thailand?

The question is whether it's possible to use a letter from a friend who is hosting you in Thailand instead of a hotel booking when applying for a tourist visa. Various comments suggest that for a standard 60-day tourist visa, this approach may be acceptable. One user mentions that they've successfully used invitation letters for visa applications and that their host reported the stay to immigration as required. However, it's noted that visa acceptance may vary depending on the visa type, and specific details should be disclosed for precise guidance.