In honesty I wouldn`t be bothering with the expensive city centre hotels. Much cheaper and much nearer for your Anfield tour is this place
http://www.innkeeperslodge.com/lodgedetail.asp?lid=58
No secure bike parking but you`ll be lucky to get that anywhere in Liverpool unless you`re paying the expensive city centre prices. Your bikes will be safe there in the car park and you`re only about 2 miles from Anfield.
Another alternative is this....
http://www.travelodge.co.uk/search_a...p?hotel_id=248
Again no secure parking but your bike will be fine and its 3 miles from Anfield.
Have a great time and enjoy your stay in Liverpool. Liverpool does have a reputation and there are, like all major cities, rough spots but you wouldn`t need secure parking at either of the above links.
Have fun