Hi I'm a girl too and I understand what you mean, I'm also going to uni in September but still, dk which one yet. I'm also considering applying for a non-ensuite accommodation as I realised that the difference in money is quite huge between an ensuite and a non-ensuite. I'm gonna tell you what I'm planning to do and hopefully, that helps you too. So I think asking for a single-sex or all girls flat/accommodation could be a good choice as it probably would be less awkward for you and it might make you feel a bit more comfortable in general. Also, trying to move in as early as possible so you can get the room closest to the bathroom/toilets that way the distance will be shorter for you !! and yh really I hope that helps good luck btw !!