hi
i started this uni in sept 2012. im in faculty of arts so i dont know anything about science department sorry, but i can help you with other stuff.
halls are good, but ensuites are quite expensive for what you get. im in robbins paying about 90 pounds a week for a shared bathroom which isnt that bad cos you get your own sink in your room and the shower and toilet are in 2 seperate rooms. its also cleaned twice a week. however alot of my friends are in francis drake sharing with 7 others paying 120 pounds and their cleaners barely clean anything. but francis drake halls are very nice halls, theyre the newer ones
alexandra works is about a twenty minute walk from the uni, and apparantly at the end of a big hill, whereas francis drake and mary newman are on campus, and robbins, gilwell(dont go there) radnor and pilgrim are across the road from uni less than 5 minute walk. all the accomodation is ensuite except robbins and gilwell. but i think you can get ensuite rooms in robbins too, but its mainly shared bathrooms. what i will say about halls, particuarly francis drake is that youre often treated like children, the resident assistants come in at 11pm to tell you to be quiet. and fire alarms will drive you crazy, just a warning. but its all good fun
plymouth has got oceana, c103, varsity and revolution which are further out of the way (but still walking distance) which are like clubby clubs, but on north hill theres a strip of bars. theres cuba and bangbang which are kinda like barry clubby things, then smaller bars around. i personally really like the plymouth nightlife and have an awesome time
north hill is literally opposite the uni.
i dont know much about skating. but some people on my course are into skateboarding and longboarding, i know they go down to the hoe, but theres also a skatepark about a 10/15 min walk away in central park.
hope this helps