Get what you want and don’t bother about impact of future sale of the property…nobody will not buy a house because it hasn’t got a bath. I’m in the process of selling my mothers house which she had the bath taken out and a big shower put in. I asked the Estate Agent if we should put a bath in and their advice was not to bother…it wouldn’t be worth the cost or the effort. People don’t buy houses and just move in, they always do something to it and if they really want a bath they’ll put one in, it’s cheap enough and no way a big expensive job that would put off a prospective buyer. And of those few people who are exceptions, its a house…there will be plenty of prospective buyers, if one doesn’t buy because of lack of a bath, someone else will. Sure enough we’ve had more than enough interest in my mothers property so the lack of bath has had zero impact on the price of the house or the interest in the property…it’s not once come up as an issue by any interested person and everyone who has looked at it put an offer in.
Personally I’d have a nice big luxury shower over a bath. I have an occasional bath but always like the idea of a bath rather than the bath itself. I’ll fancy a bath occasionally, run it, get in and after about 3 minutes I get bored, wash up and get out. Waste of water and energy to heat the water.