Positive:
Perfect location; close to Euston and St Pancras. Quiet area. Very affordable
Kannell was very clear on instructions.
Negative:
If you are a light sleeper then you might be unlucky with other guests. 2 of my 3 nights i had the roommates being obnoxious as they did not respect the quiet hours set by Kannell. It sounded that they were young guys going out which is more than fine, they just walked in and were not considered with other guests. They were loud, running up and down on the stairs, left lights on, slammed the doors, etc.