TLDR : Answer Summary
The consensus from community members suggests that the Thai embassy in Vientiane is more hassle-free compared to the one in Phnom Penh. Vientiane's consulate is described as user-friendly, with fewer documentation requirements such as the proof of 20,000 baht in a bank account and proof of onward travel. Applications can be processed quickly, providing the passport the next day. Conversely, the Phnom Penh consulate requires more documentation, takes longer to process (up to 3 days), and is not considered user-friendly. Regarding accommodations, it's recommended to stay near the river in Vientiane for access to bars, restaurants, and the night market.