Beautiful appartment with a lot of character. The location is great, right off Kingsland Street, the heart of Dalston, but in a quiet neighbourhood. Wifi, washing machine, great shower, comfy bed with down pillows, well equipped kitchen (which we didn't use though), a lot of nice breakfast options around, cool bars in the neighbourhood, the Arcola theater around the corner. You don't have to leave the neighbourhood if you want.
Only minor downside was the relatively small bed (140 cm), but this appears to be what the term 'double bed' in the UK means. So we could have known. ;-)
We did not meet Mildred in person but she left clear instructions and was very responsive!
So basically, look no further :-)