If you want to do some shopping and don’t want to be far away from the downtown, that’s fine. Within Chiang Rai downtown, there are still many good places. Take Chiang Rai Walking Street as the first one, as it is one of the most popular night shopping district.
Or, if you don’t want to do shopping, but just want to find some nice place to relax yourself, that’s still fine too. Let’s take some places like Singha Park, Wat Rong Khun, Khun Kon Waterfall etc.