To Holiday Inn Express Zhabei Shanghai, you could take Pudong airport shuttle bus Line 5 to its terminal at Shanghai Railway Station and then a taxi to this hotel, which is located about 3km away.
To Holiday Inn Shanghai Downtown, also take shuttle bus Line 5 to Shanghai Railway Station, and then you could walk to the hotel located on the north square. Close to the railway station, the area around this hotel is much busier.

I think both of these two hotels are ok. Seems Holiday Inn Express Zhabei Shanghai has better service facilities.