People differ in their perspective, some will count something as an advantage while others may see it a disadvantage, so I’ll write my review as points and you can see it from your point of view:
1. The host is responsive and welcoming.
2. The flat is clean so is the bed.
3. It kind of in a basement that has three other flats and the flat has three rooms one of them yours.
4. The space on the left side of the toilet in the two bathrooms are a bit small.
5. You can use the kitchen which has a gas stove and it’s fine not very good not very bad, I used it for cooking.
6. The room is small and can’t fit two except if you don’t have a lot of stuff because it doesn’t have enough storage.
7. Bed is comfortable and barely can fit two. It could be counted as 1.5 size.
8. Living room has enough space ,I guess, and couch kept clean.
9. Location is great in a convenient area and three stops away from central London via the underground which is around 100 meters away from the flat.
10. Watch out for inflexible cancellation policy.
You may give a value (-10 to +10) for every point and that will help you to make your decision after counting them all.