A great little spot in Tower Hill! It's about 5-6 minute walk to the Tower Hill underground. I stayed here as part of a work trip and it's 15 or so minutes to get to most of the insurance buildings (Lloyds, AON, etc) so it's a very convenient place to stay if you're trying to get to the office.
The flat had a few issues, primarily there is a lack of ventilation going into the unit (so it gets pretty stuffy). It's also right beside a train station so if you're a light sleeper, bring earplugs. And finally while I was there, the shower drain was clogged and water wouldn't go down, making the shower pretty gross to use.
Regarding the last issue, the City Relay team was super responsive to all of my messages. They coordinated to get a plumber in to take a look at the issue and though they weren't able to fix it (which isn't really their fault), they still compensated me for the inconvenience, which is super great of them!
There was a good amount of space and I would recommend this place for a short stay if you're here for work. If you're on vacation and looking for someone nicer to relax, I'd advise maybe spending a bit more and getting something slightly nicer (: