The second floor of Changshu Yujinlou Hotel may have many functions. According to the general hotel layout, the following are some common possibilities:

1. Guest room floor: The second floor may be the guest room floor of the hotel, including all kinds of rooms and suites for guests to stay in.

2. Dining area: There may be a restaurant, cafe or bar on the second floor for guests to eat or enjoy drinks.

3. Meeting rooms and banquet halls: There may be multiple meeting rooms and banquet halls on the second floor of the hotel for business meetings, training, banquets and other activities.

4. Leisure and entertainment facilities: Leisure and entertainment facilities can be provided on the second floor, such as gym, swimming pool and sauna room. So that guests can relax.

Please note that the above are just some common possibilities, and the specific situation may vary according to the scale, facilities and operation strategy of the hotel. If you want to know the specific facilities on the second floor of Changshu Yujinlou Hotel, please contact the hotel directly or check the hotel official website.