The IC also has great river views to be sure- it is diagonally across the square from the Gresham Palace. I have stayed at the IC also and it is good for views and RA treatment- as far as physical buildings go it is functional although not charming.

Restaurants? Any particular taste you are looking for? I am probably not the best person to ask as I tend to go to foreign food restaurants in Budapest- so for example I like Nobu and Tokio (2 Japanese places- Nobu is the same group as London, HK, etc and is in the Kempinski Hotel, Tokio is just across the street from the Four Seasons)- for a great glass of wine pre or post dinner there is diVino (2 outlets- one very close to the hotel on St. Stephans Square- the other about a 10 minute walk away just off Andrassy UT)- very impressive selection of Hungarian wines from every region and sommelier with excellent knowledge and a real passion for Hungarian wine.

The restaurant by the way at the Four Seasons itself is excellent (Gresham) and definitely worth eating at- also if heading there for dinner do make reservations as it is typically very busy. Just next to the Marriott on the river is a very good Thai place as well run by a family from Northern Thailand- it has been there forever with the same family running it- I have been a regular customer for over 15 years- if you are walking along the walkway in front of the river (runs past the IC and the Marriott) you will see a large sign that reads "THAI RESTAURANT"- that is it.