There's a massive range of quality and prices when it comes to hotels in Bangkok, and the city is enormous as well, so you really want to do your research for this place. Most people are happier paying a bit more to stay near the river and all the tourist attractions, or even in the infamous Khosan Road backpacker district, which is cheap and fun, if tacky.
Hi, I am from the African Continent and have travelled extensively in December in this region as it is our summer vacations. A few suggestions; Yes, Mauritius is cheap, safe and warm; Zanzibar is another beautiful destination with friendly people, beautiful weather and stunning beaches and resorts; I would recommend almost any province in South Africa, especially the Cape Regions, Kwa Zulu Natal, Mpumalanga Province- the seaside resort without the sea and The Sun City Resort in Rustenberg. I suppose a first time visitor could book a package to a few regions. And no, we don’t have lions running around, nor is it as dangerous as the media portrays it to be. Good luck May!
If you are more interested in nature and adventure than culture, then the top choice would be Costa Rica. The country has many beautiful national parks and it’s filled with things like zip-lining and canopy tours, just to name a few things. There are also volcanoes and surfing beaches and much more, plus a very good backpacker infrastructure of cheaper hotels and hostels.
You’ve been to Cancun, but have you been to Playa del Carmen? Personally I much prefer it because PdC is a lovely tourist town with hundreds of little hotels and restaurants and bars, unlike Cancun, which is mainly a long string of high-rise beach hotels that are so spread out that you are nearly trapped in your own hotel. It’s about an hour south of Cancun airport by taxi or shuttle. That would be another of your cheaper options, partly because flights into Cancun are pretty cheap. It will be the tail-end of the rainy season in all of these places, but that usually just means a 30-minute rain storm a few afternoons each week.
Trekking in Nepal during peak season might not sound like the most sensible choice for penny-pinching backpackers. But you can still enjoy the ideal weather without spending a fortune on in-demand hotels and expensive permits if you're happy to swap big-name trails, like Everest Base Camp and the Annapurna Circuit, for quieter treks to Kanchenjunga Base Camp and around the Langtang Valley. Idyllic conditions (dry but not witheringly hot) are also on offer in Rajasthan, one of India’s most vibrant and varied states. Chug between notable, attraction-rich cities like Jaipur, Jodhpur and Udaipur on an atmospheric and wallet-friendly Indian train, snacking on spicy pakoras and sipping sugary chai en route.