I've stayed at the Porn Ping Tower...
I've stayed at the Porn Ping Tower many times over more than a decade. It's fine for what it is. It has no pretensions; it never changes from one year to the next. Its decor, occasionally refreshed, remains the same as do many of the staff, the processes they use, the food at breakfast, and the services and amenities they supply.
It is though excellent value with large clean rooms, in the centre of the Night Market area of Chiang Mai. It has good views towards the mountain Doi Suthep or over the river and I have rarely been disturbed by rowdy or inconsiderate guests (although I wish I could say the same about the neighbours' dogs which can bark incessantly morning and night, the muezzin calling people to prayer from the nearby mosque, or the pigeons which insist on cooing on the balconies from first light). It has a lot of undemanding Thai and other Asian guests and I suspect that will mean that little, including its tariffs, is going to change much in the near future.
So it's a take it or leave it hotel. It is what it is. If there are aspects which irritate beyond endurance, go elsewhere because they're not going to change. If you're reasonably laid back and not inclined to get on your high horse about little inadequacies here and there, you want a good deal and to be centrally located in a large room, this is probably for you.