I had an enjoyable stay at BYD recently.
These new apartments are modern, spacious, well-furnished, and clean and offer excellent value in Patong. The small rooftop pool can be relaxing if you are lucky enough to have it to yourself and the bar/restaurant is well served by attentive staff and offers a good selection of food and drinks.
The location is excellent. A short stroll from the beach (head to the north end if you wish to find a slightly quieter spot) and there are many good restaurants and bars just a short distance away.
The reviews here in general, offer an accurate picture of BYD Lofts and I would certainly stay here again if the opportunity arose.