extended stay in Tokyo

Bit of a tripadvisor type question really, however you guys might spring some fresh ideas to our current problem.
Mrs NH is heading out to Tokyo for 4 weeks early in the new year doing research at National Cancer Centre in Ginza.
She would pick one of the most expensive places to be based :0
We have no real support in terms of accommodation deals/ suggestions from the japanese side, and NHS being NHS, (and rightly so) have limited funding, given already contributing to flight costs etc.
Question is; would you expect much leeway on rates for a 4 week stay.
Anyone recommend a furnished apartment route? (company who provide such things). We are out there in couple of weeks, so will have opportunity to look into some options etc. Main thing we need to consider she will be on her own..
NH
Any thoughts gratefully received.
Mrs NH is heading out to Tokyo for 4 weeks early in the new year doing research at National Cancer Centre in Ginza.
She would pick one of the most expensive places to be based :0
We have no real support in terms of accommodation deals/ suggestions from the japanese side, and NHS being NHS, (and rightly so) have limited funding, given already contributing to flight costs etc.
Question is; would you expect much leeway on rates for a 4 week stay.
Anyone recommend a furnished apartment route? (company who provide such things). We are out there in couple of weeks, so will have opportunity to look into some options etc. Main thing we need to consider she will be on her own..
NH
Any thoughts gratefully received.