This is a 2-star rated guest house on the Ganges, and you get pretty much what you would expect. If you are used to 4 and 5 star hotels this will be a shock - more suitable for backpackers, etc. It is close to the central area for the ceremonies on the ghats, but quicker to walk (around 20-30) minutes than to go by car. We were told there were nicer guest houses closer to the main action and still close to the Ganges. There are no 5-star hotels in Varanasi!
The rooms appeared dirty and rundown - e.g., toilet seat completely broken, sheets with stains, etc.
However, the staff were very friendly, and they serve good vegetarian food on the rooftop, with views over the Ganges, or inside when the mosquitoes start biting. The one cook they works very hard. They also serve beer.
Having said this, the views over the Ganges are great within the expected urban living. Take a boat cruise for the morning sunrise.
All in all, the prices at the Rahul can't be beat and so you get pretty good values for money.