I never really liked the Taiwanese version of this drama (and I only briefly watched the Korean version) but Thailand has proven to me that they can do remakes well and most times better than their original counterparts. With that in mind, I gave this a go and here are my thoughts:

Likes
-A cohesive and engaging story with no filler and a nice balance between the serious and the silly aspects; it's a more mature re-telling of the original, which I really liked 
 -ML (Phawut) is one of the best MLs with how kind, compassionate and silly he was. Loved how he cleanly cut off his ex he realized he was in love with the FL (Wanida). One of the rare ones where who takes responsibility for what he does and truly has the FL's best interests at heart
-Esther gets flak for playing the same type of innocent, kind girl that gets taken advantage of, but you gotta admit she plays it well. She was a doormat but I never felt annoyed and rooted for her to break out of her shell
-Secondary cast was great; the grandma was more serious than I expected, but I actually liked that a lot. She knew when to get involved and when she should leave things be, and respected the ML's wishes even if it broke her heart. She also looked out for the FL and had her corner when ML was being mean. Loved the secretary and Wanida's mom as well
-I really liked Tre as Taya here (side note; anyone else get thrown off by his character name? If you've watched Prissana 2000 then you know it's the real name of the main actress. I found that so weird) and I found him more charming here than in Wayla Kammathep. What charmed me was how he liked the FL but never pushed her boundaries and respected that she was with the ML instead of trying to steal her away. Plus his search for his sister was really nice (also I'm hoping him and Esther get to do a lakorn together because their chemistry is pretty good)
-The use of Phawut's illness to push Wanida away didn't turn me off; usually I dislike these plots because of noble idiocy and it's been done before. But here it made sense; if she knew early on and stayed, she would've never got the chance to study abroad and develop as an individual. It was better that she saw the world first before staying to take care of him. I actually cried quite a bit at the angsty scenes regarding his illness, and felt invested in this storyline; so overall, this was a "male lead has a 'terminal' illness" done right

Dislikes
-the story lost some steam for me near the end, since it was easy to predict how things would turn out
-I wish there was more romance between the leads; there was a lot of romantic scenes in the beginning, but the true romance where it was just the two of them (no ex, no obstacles or misunderstandings) was short-lived before he found out he was sick. Then it went all angsty and self-sacrificing which I enjoyed, but made the leads separate up until the very end. It felt a little unsatisfying  
-Although I really like the ML, I think him not telling 2nd FL (his gf at the time) that he was married and got someone pregnant was shady af

Overall
It wasn't an addicting watch, but it was certainly enjoyable and well produced. It stayed faithful to the original story while adding its own Thai flair and twists that fit in the plot. Thailand strikes it again as being able to do great remakes of classic dramas. If you were a fan of the original story, I would recommend giving this a go.