We stayed 2 nights at the Hansar Hotel. This hotel is well located if you wish to visit modern Bangkok.
The room was superb : patio with vegetal wall, cutting edge bathroom, well equipped bedroom.
We loved the infinity swimming pool!
Breakfast is excellent and could be taken on the terrace.
Service was very good and staff members went the extra mile to satisfy us. For instance during breakfast the waiter did his best to find our favourite local fruits (longans) that were not served that morning ... The only downside was one of the concierge that was a bit too familiar with us!
We had dinner at the restaurant before leaving, food was excellent and service perfect!
We would not hesitate to recommend this hotel and we hope to try soon their sister one in Samui!

The Hansar is simply FANTASTIC!

The rooms (we had an Urban Suite) are impeccable - spacious, tasteful, contemporary, quality all through. What others have said in this regard is true. It felt like home after a very short time. The beds are the most comfortable I have experienced in 30 years of visiting Thailand. Eat your heart out, prestige-chain, posh 5* hotel next door! The Hansar rooms win on every count.

As it lies in a "no-through" side road between two main thoroughfares, the Hansar is unbelievably quiet and one can enjoy a superb breakfast on the terrace in peace and comfort at well-spaced tables with discretely attentive service. The pool area, though surrounded by high rises (which only adds to the city atmosphere), is most restful. The pool is of a good size and immaculate, the beds well spaced and water and cold towels come with a smile and the occasional slice of water melon.

Would I book again? As long as rave reviews like this don't price me out, I shall not hesitate.

Thank you Hansar. What a great example you are to the service industry.

I was very excited about staying here given the hundreds of rave reviews but left feeling like the experience wasn't at all one a #1 rating on Tripadvisor should offer. Here's what disappointed me:

- The "green wall" next to the room door is nothing special. It's behind a glass wall that is lit at certain hours, so nature is safely kept away from you, and it's just 4 rows of small potted plants along a wall... I really couldn't see what the excitement was all about.

- Despite the hotel branding itself as a green boutique hotel, I didn't get that feel at all. Staff were somewhere between indifferent and very casual; it's actually a big ugly concrete block that faces other big ugly concrete blocks on all sides on a potholed street; reception is on the 2nd floor (not the ground floor) so when you arrive with your luggage, you need to walk into the restaurant to be pointed towards a lift (not quite an amazing welcome); the corridors are what you'd expect to find in a concrete block (ie more concrete).

- The pool is on the side of the building, on the 8th floor, with views of big ugly concrete buildings (presumably, guests of the 4 Seasons enjoy watching people swim). When we went one afternoon, there was an event by the pool with lots of people in fancy clothes, a photographer and a microphone and I did feel like I was at the zoo (but inside the cage) while everybody sipped wine and looked at me... I didn't stay very long.

- The food at the French restaurant downstairs is just ok but incredibly expensive and not really worth bothering with at all.

- Whenever we enquired about tourist recommendations, the advice was absolutely not tailored to the guests' (our) taste: they have a print-out of several standard tours, and that's all they will sell. For example, I'm grateful tripadvisor helped me avoid the floating market as that would have been a very expensive and frustrating day-trip. Restaurant recommendations were equally disheartening.

- We were there during Chinese New Year and enquired if there would be anything special going on anywhere, but got absolutely no help there ("maybe if you go to Chinatown you can check if there is anything")

Things I liked:

- The rooms are very big and very nice with some very interesting books you can read. The bedroom part itself is a bit walled in though, in order to make the living room bigger.

- Breakfast was terrific, varied, beautifully presented, tasty.

- Location is between the St Regis and the Four Seasons, but more importantly it's next to the Skytrain. If you're in a cab, don't bother saying "Hansar" or even showing the hotel card with a map on it: just say "Four Seasons."

New hotel designed to be green with spacious rooms, great buffet breakfast, and good location