I'm house sitting for a friend of mine while she's on holiday. Truthfully, she's being nice enough to let me stay in her home and take care of it while she's away, but tomaytos, tomahtos

. She said I could use her shed/garage/storage unit (not really sure what to call it as it looks like it used to be a garage but the garage door portion has been sealed up) to store my bicycle. I didn't think I'd need to, but seeing as it's been raining non-stop the last few days and there's not really a dry place to store my bike other than just dragging it into the house, the idea of storing it in the shed is becoming more and more appealing. I just phoned my friend yesterday and she insisted the key to the shed is somewhere in the house, but I'm not even sure what to look for. She rarely uses it either so she wasn't a huge help describing it other than saying, "It just looks like a key" and then "Just pick it or something. I don't think it's heavy duty or anything."

Friends, can't live with them, can't live without them....
Anyways, I'll be here for almost 3 months so I'd love access to the shed if possible. I've attached a picture of the lock if anyone knows what the sort of key would look like. I may try to call out a locksmith and see if he can figure out the manufacturer (another thing my friend had no clue as to the answer) and see if I can get a spare or replacement.
https://imgur.com/gallery/GbQsr