DLT 2015 will be hosted at the Crowne Plaza Liverpool City Centre . The Crowne Plaza Liverpool City Centre is a short (~10-15 minute) walk from Liverpool Lime St Station. Similarly, it is a 10 minute walk from the Paradise St Bus Station and the Liverpool One shopping center.
A room in Crowne Plaza can be directly booked via their website.
Crowne Plaza booking link
Other hotels of varying prices and ratings are available nearby, which an easy search will locate. Some options include (listings shouldn't be interpreted as endorsements):