How can I get from HK to Muslim hotel?

You can take East Rail Line at Hung Hom, Hong Kong to Lowu, where you can cross the immigration border to Luohu. Then you can take a taxi to reach your hotel within 10min. The whole journey including the train and the taxi costs you around CNY55.

Actually, there is special Muslim Restaurant with good Halal food in the hotel. So you can directly enjoy yourself in.

The average temperature of both cities is around 15C and Hong Kong is a little warmer sometimes. Generally it is a little cold. If you plan go there these days, I suggest you take along windproof jacket and jeans. For cold night, many cardigan or a light sweater is also needed.

As you do not mention your date of arrival I hope this response still valid. From HKIA you can take its cross-border taxi (usually Toyota Alphard) and inform the receptionist you're going to Muslim Hotel Luohu, HKD150. Another taxi (also Alphard) will take you from Huanggang Kou'an to your Hotel.

If you take the East Rail (HKD34-36 not sure because I'm using Octopus card), coming out from Luohu Port, take bus no. 83 or 97 and stop at Wen Jin Nan Lu (Wen Jin South Road) only RMB2. Just cross the road and you will see the Muslim Hotel. There are three restaurants there, ground floor, is the Blessing and small restaurant usually full during breakfast, and 1st and 2nd floors (3rd according to Chinese standard). The ground floor small restaurant is cheaper than the other two.
Wan