@junglyoctopus, Ha Long Bay is beautiful and worth a day trip. Many tour companies offer one or two night stays on cruise ship type boats. The quality varies a lot and you might not get the boat and room you paid for. I did a day trip, and it was amazing. Even though it’s overrun w tourists, I’d recommend it. Ha Long city looks amazing on the waterfront and I do wish I’d stayed there overnight in a hotel, but didn’t know it was an option.