Midrange
Hotel Asia Center of Japan
Excellent budget hotel -- no amenities like a gym or spa, but friendly staff, small but well-appointed rooms, restaurant. Free high-speed internet in room, coin internet in lobby. Laundry available.
Hotel Arca Torre Roppongi
Also super centrally located at Roppongi Crossing, with small but acceptable rooms the cheap ones are without daylight
Hotel Villa Fontaine Roppongi
Nice and spacious rooms targeting for business travelers.
Hotel Ibis Roppongi
Older hotel with relatively small rooms, starting from ¥13,500, convenient location near Roppongi Crossing. Entrance is a little bit difficult to find, next to a game center. It is only a few steps down Gaien-Higashi Dori in the opposite direction of all the bars and clubs. Very convenient to both Hibiya and Oedo subway lines.
the b
Super centrally located at Roppongi Crossing center of night life area, 2 minutes to subway Hibiya and Oedo line, renovated in spring 2006, nice but small rooms.
Top end
Tokyo Prince Hotel
If you insist on staying in a "western" hotel near Roppongi, and have to stay within a budget under ¥20,000 per night, the Tokyo Prince Hotel is one of your few options. The hotel is almost at the base of the Tokyo Tower and is located in a quiet, tree-lined neighborhood just a 15-minute walk from the action in Roppongi. The hotel staff speak English, and the hotel has the amenities of its modern competitors. But it is a bit of a throwback. The beds are short, the decor is tacky, and everything except the DSL feels a little dated.
Grand Hyatt Tokyo
A part of Roppongi Hills, and not to be confused with the more famous Park Hyatt of Lost in Translation fame, which is in Shinjuku. Sleek and minimalistic, all black, gray and brown, with expensive design that never hesitates to sacrifice function for form, but the superlative service makes up for it.
Villa Fontaine Roppongi Annex
Formerly Roppongi Prince, this is a Western style hotel that is significantly closer to the nightlife than the Tokyo Prince Hotel. Full queen size beds available, rooms look contemporary with ambient lighting and accent walls. Most importantly they are extremely quiet. The walk to the heart of the club scene in Roppongi is a quick 10 minutes up the hill, versus 20 mins from Tokyo Prince. The hotel staff speak English, but facilities are minimal no gym, no pool, no laundry. High speed internet access is available upon request and only costs US$5 per day from noon to noon.
Ritz-Carlton Tokyo
Located on the top floors of the hip Midtown building, the tallest in Tokyo.
Super Sauna Roppongi VIVI
Given the name you might well be excused for thinking this is in an entirely different business, but this is in fact quite a decent capsule hotel that caters to women also.