The question is simple: for the kind of facilities this hotel has, you must pay over $200 dollars per night in Kiev. Kiev is full of ugly extremely old hotels/buildings that are terrible and expensive. The Senator's has effectively a 4 or even 5 hotel infrastructure, quiet, clean, free wi-fi internet at the Cafeteria (like all Renaissance's, for example), flat screen TV in the room and huge beds with spotless rooms.
Now: it is FAR away from Kiev and it may cost you around 300 H to reach the hotel and maybe 200 to go to the city. Now: if you translate this in dollars, it is not more expensive than the cab that takes from the airport to Istanbul. Therefore, if you are in a business trip and you have one or two meetings and then you want to come back to your hotel to rest, eat and surf the internet a little while, this is your spot.
However, if you are looking to be in the middle of the action (ergo you want to do some tourism in Kiev), be aware of the distance (maybe 20 minutes to the city) and this is not your place.
I cannot emphasize how modern and good is this place compare with some of the scary and "soviet style" hotels and apartments I have seen: sincerely, if these guys would have a shuttle service to the airport and to the city, probably this hotel would be booked for the rest of the year...