I have stayed at the Nishi Shinjuku Hotel (my own review here: http://www.flyertalk.com/reviews/rev...?review_id=175)
and the Takanawa Prince (review here: http://www.flyertalk.com/reviews/rev...?review_id=172)

And I am familiar with the New Takanawa Prince and the Sunlite.

The Sunlite and Nishi Shinjuku are extremely similar - both are decent 'Business' hotels near Shinjuku with small rooms and modular molded washrooms.

The New Takanawa is a step up - with much larger rooms - http://www.princehotels.co.jp/newtakanawa/index.html (I believe the baths have some kind of jet system) and is located in the grounds of a gorgeous garden. It's a popular destination for those on guided tours and Japanese couples on a moderate-good income and the lobby reflects this.

The Takanawa Prince is more sedate somehow. Rooms are a good size, location is excellent. Doesn't feel out of the way at all - you should get to most parts of Tokyo within 30 minutes or so for under $3.

At the prices you've stated, I have no doubt whatsoever that the Takanawa Prince provides the very best 'value'. (Tax and service charges comes to exactly 15.5%) - the cheapest rooms at the New Takanawa are larger (29msq v 24msq) but the view from the "Tower View' rooms at the Takanawa is magnificent (request a higher floor for these and a lower floor for "Garden View" rooms).


Another cheap option in Shinjuku is the Park Inn (review and links here - http://www.flyertalk.com/reviews/rev...?review_id=174)

I have not stayed at any of the Villa Fontaine Hotels, but I wouldn't choose to spend my holiday around Ueno. (I understand where jib71 is coming from - but I prefer the 'downtown' feel in Nippori and places like Minowa... it's just a little too 'seedy' around Ueno station)