Great location, close to Borough Market, Bermondsey and the Southbank. The 1st floor flat was quiet and comfortable for being so close to London Bridge Station (easy connections).
We stayed 6 nights with our 9 month old, and brought our own crib and high chair.
The kitchen was generous, and had the basics. You might find a few things missing if you plan on doing a lot of your own cooking.
NOTES - We stayed in the 30+ degree C heat of July and nights were warm (no AC). There is a lift in the building, but it is up a 4-5 curvy steps from the street level - a bit tricky if you are solo with a baby buggy. There is a climbing wheelchair platform that we did not try. We did not meet the host, and collected the keys from a lockbox. There was garbage, but no recycling bags or bins provided. Clothes washer & dryer, but no drying rack.