This was my first shared space stay, and doubt I'll do it again.
Pros:
Location was close to the event I was attending
Host was quick to respond
Room was spacious and comfortable
Cons:
At least 3 times the external door was unlocked AND open - twice during the evening (fault of other guests, but still a risk)
Room is heated by a space heater that was plugged into a very cheap extension chord (fire hazard)
No smoke detectors in room or hallway
No light in alley to side of the house to the back entrance
Cleaner mistakenly entered my room while I was in it sleeping
There was no toilet paper available in the shared washroom
Space is loud - you hear every door open/close. Not much can be done by the Host, but expect banging until 1am.