I really enjoyed my stay at Tropical Resort.
The owner comes across as very kind and caring - she has some strict rules (no alcohol on the premises, please), but she also provided me with bug repellent, warned me to be careful of the undertow when I went swimming, and recommended the best place to get pizza in town. I liked her enormously.
Although many of the hotels here call themselves "resort", they don't mean it in the American sense, so don't expect onsite spas, restaurants and room service. The resort is a collection of bungalows in nicely landscaped grounds (if you want spas and room service, there are several expensive resorts on the island).
The bungalows are comfortable and kept very clean. They all have nice covered porches where you can sit and look out over lovely gardens, and the location is perfect if you want a quiet relaxing break. Pantai Tengah is quiet and relaxed, but only about 15 minutes walk to the main strip at Pantai Cenang, which is filled with shopping, restaurants, budget hotels, bars, and a crowded beach. In comparison, the beach at Tengah is much nicer - a quiet place to chill without having to dodge hordes of other tourists.
Langkawi is a very touristy resort island, so everything here is much more expensive that elsewhere in Malaysia. That said, I thought Tropical Resort was excellent value for money. I paid 90RM a night (although the price went up at the start of January to 100RM, but I'd arrived on 29 December so I got the cheaper price).
If you like gardens at all, I recommend the Rice Garden - it's fascinating, and the man who showed me around was amazing, telling me stories, teaching me about all the plants, giving me coconut biscuits to eat and teaching me to play a traditional local game. Visit it if you get the chance!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC