expected a more modern design
The lobby looks beautiful, but the rooms are old and outdated. The service is good, not the best but good.
Check in was very efficient. We got upgraded to a one bedroom suite, when we wanted to become Ambassador member besides being Platinum members of IHG. We had room 1438. A corner suite. The furniture is old, but clean. There was a door from our living room to the room nextdoor. We could hear our neighbours talking. It was embarrasing as they discussed very private matters. 
Breakfast is served in the Top of the Mark and downstairs when they are using the Top for other occasions. Breakfast is good. Lot of fresh fruit. Although it is 1 buffet, there are 2 different price options. We constantly got the wrong check. When you say something about this staff replies immediately with the words: " Sir your check is correct". Then the look to the check and say "oh I brought the wrong one". 
The gym is too small and too old. We did not like the gym. What we missed was a spa. 
Location is very good, close to everything.
Internet is so slow, emails that ages to show up. The worst part is that you have to pay for the slow Internet (not when you are Ambassador member). 
Checkout was efficienty again, but the invoice was wrong. They immediately adjusted the check. Valetparking is efficient too, but expensive.
We expected more of this Intercontinental hotel.