Accommodation

Hotels

• The Britannia Adelphi Hotel
• base2stay
• Holiday Inn
• Premier Inn (City Centre: Moorfields, Liverpool One, Albert Dock)
• Formule 1
• Travelodge
• Devonshire House (away from the city centre, closer to the pool)
If booking late a good resource is http://www.laterooms.com/ which has the last rooms available, Liverpool is a busy city. 

Apartments

Apartments available for short stay. They usually accommodate up to 5-6 people and when shared are good value for money. From £50/night for an apartment.

• Duke St, Spectrum
• Duke St, Lever Court
• Mount Pleasant

Budget accommodation

There are several hostels that offer cheaper accommodation option.
Website: www.hostelworld.com is a good resource. Please find few hostels in good location listed below:

• Royal Chambers
  
• Liverpool International Inn
• Hoax Hostel
• YHA Liverpool
• Hatters Hostel- Liverpool