Pros:
- The place is really really good. It looks exactly as on the pictures.
There is everything you might need.
The size is really good for 2 persons.

- The location is great, right next to Taksim, very central and 10mn from the Havatas shuttles to the airport.

- There is a nice cat chilling in the stairs.

Cons:
- We had a huge check-in problem and complete lack of communication from Raven. I sent an email on the day prior to our arrival, telling them that we would arrive very late. We didn't hear from them and when we arrived at 3am, the bar was closed, with no way to get to the rooms, and their phone written in AirBnB was off.
Hopefully people in the street helped us and the owner of the liquor shop in front of the hotel called a guy, who called a guy, who took us to sleep at another place (belonging to the same group) until the next day.
When we arrived the day after at Raven we explained the thing to the staff but didn't get any apologies from their side.

- Noisy 8.30am bar deliveries
- No hot water on the first day

However the place is really great and I highly recommend it. I would just warn you about late check-ins...