Maybe 100rmb, if I recall. Would take maybe 50mins. There is also a shuttle bus you can take, about 2miles away from the Holiday Inn. It leaves every 20mins for the airport and costs around 20rmb per person, one way. It departs from another hotel called 金圆大厦. Get a 8rmb taxi there. Good service, takes about an hour and 15mins. Good choice if you are a solo traveler or a couple. You buy a ticket on board, it will usually leave on time but I have sat on it for 20mins before it left also, so plan with that in mind. Stops first at another pickup point then Terminal 2, then Terminal 1.

Yes it serves Indian food. Unsure about the spa. I think it might.

The nearest metro is the main train station, Shijiazhuang, NOT Shijiazhuang North. The city is currently building a subway system, so you have to either take a bus (I don't know which one will take you to the hotel), or a taxi. The taxi fare shouldn't be more than 20 yuan. The hotel is fairly close to the train station, but it is too far to walk. In case you are unfamiliar with Shijiazhuang, it is one of the most polluted cities in China, bring surgical masks to wear. There are many days during the summer when it can be quite bad, although the winter is worse. Many people wear them, so don't worry about looking strange.