After travelling many times to Bangkok and staying at larger hotels such as The Sukhothai and the Banyan Tree, I found a great small boutique hotel called Maduzi. It is located of Sukhumvit Road near one of the train stations. The rooms are one of the largest and best equipped in Bangkok while the hotel service is excellent. There is a small gym and no pool but for a business trip this is not necessary. The restaurant is great and Long Table restaurant is a walking distance in the same street.